How do I see what files/registry keys are being accessed by my application in Windows?

See what files/registry keys are being accessed by application in Windows

I&#39;ve developed an application that load an image using the context menu of window (right click on the file) and for the moment is working, but the reg key is on

    HKEY_CLASSES_ROOT\*

and it works with all files.

I want that the menu item on the context menu should be displayed only with .jpg files.

How can I do that? Which registry keys should I use?

Add menu item to Windows context menu only for specific filetype

I have developed an application and installed it on a client computer. In my application I need to get its installation path. My application has a registry entry at: 

&lt;!-- language: none --&gt;

    HKEY_LOCAL_MACHINE\SOFTWARE\MyApplication\[AppPath]

How can I read `AppPath` using C#?


Reading a registry key in C#

I&#39;m a new Windows programmer and I&#39;m not sure where I should store user configurable application settings.  I understand the need to provide a user friendly means for the user to change application settings, like an Edit | Settings form or similar.  But where should I store the values after the user hits the Apply button on that form?  

What are the pros and cons of storing settings in the Windows registry vs. storing them in a local INI file or config file or similar?

Registry vs. INI file for storing user configurable application settings

I&#39;m looking for a way to configure a few options in Folder Option dialog of Windows Explorer through Powershell.

The options are:

- Choose &quot;Show hidden files, folders, and drives&quot;
- Uncheck &quot;Hide extensions for known file types&quot;
- Uncheck &quot;Hide protected operating system files (Recommended)&quot;

Configure Windows Explorer Folder Options through Powershell

Now that Office also comes in a 64bit install, where in the registry do you find out if the version of Office installed is 32bit or 64bit?

Detect whether Office is 32bit or 64bit via the registry

I&#39;m trying to write to the registry using my C# app.

I&#39;m using the answer given here: https://stackoverflow.com/questions/1660870/writing-values-to-the-registry-with-c#answer-1660938

However for some reason the key isn&#39;t added to the registry.

I&#39;m using the following code:

    string Timestamp = DateTime.Now.ToString(&quot;dd-MM-yyyy&quot;);

    string key = &quot;HKEY_LOCAL_MACHINE\\SOFTWARE\\&quot;+Application.ProductName+&quot;\\&quot;+Application.ProductVersion;
    string valueName = &quot;Trial Period&quot;;

    Microsoft.Win32.Registry.SetValue(key, valueName, Timestamp, Microsoft.Win32.RegistryValueKind.String);

The `Application.name` and `Application.version` &#39;folders&#39; don&#39;t exists yet.

Do I have to create them first?

Also, I&#39;m testing it on a 64b Win version so I think if I want to check the registry for the key added I have to specifically check the 32bit registry in: C:\Windows\SysWOW64\regedit.exe don&#39;t I?

Writing to registry in a C# application

Is it possible to modify a registry value (whether string or DWORD) via a .bat/.cmd script?

Is it possible to modify a registry entry via a .bat/.cmd script?

I&#39;m writing a tweak utility that modifies some keys under `HKEY_CLASSES_ROOT`.

All works fine under Windows XP and so on. But I&#39;m getting error `Requested registry access is not allowed` under Windows 7. Vista and 2008 I guess too.

How should I modify my code to add UAC support?

Requested registry access is not allowed

When I try run `make` from cmd-console on Windows, it runs Turbo Delphi&#39;s `make.exe` but I need MSYS&#39;s `make.exe`. There is no mention about Turbo Delphi in `%path%` variable, maybe I can change it to MSYS in registry?

Where can I set path to make.exe on Windows?

In my powershell script I&#39;m creating one registry entry for each element I run script on and I would like to store some additional info about each element in registry (if you specify optional parameters once then by default use those params in the future).

The problem I&#39;ve encountered is that I need to perform Test-RegistryValue (like [here][1]--see comment) but it doesn&#39;t seem to do the trick (it returns false even if entry exists).
I tried to &quot;build on top of it&quot; and only thing I came up is this:

    Function Test-RegistryValue($regkey, $name) 
    {
    	try
    	{
    		$exists = Get-ItemProperty $regkey $name -ErrorAction SilentlyContinue
    		Write-Host &quot;Test-RegistryValue: $exists&quot;
    		if (($exists -eq $null) -or ($exists.Length -eq 0))
    		{
    			return $false
    		}
    		else
    		{
    			return $true
    		}
    	}
    	catch
    	{
    		return $false
    	}
    }

That unfortunately also doesn&#39;t do what I need as it seems it always selects some (first?) value from the registry key.

Anyone has idea how to do this?
It just seems too much to write managed code for this...

  [1]: http://powershell.com/cs/blogs/tips/archive/2010/04/08/test-whether-registry-value-exists.aspx

Test if registry value exists

I&#39;m trying to assign the output of a command to a variable - as in, I&#39;m trying to set the current flash version to a variable. I know this is wrong, but this is what I&#39;ve tried:

    set var=reg query hklm\SOFTWARE\Macromedia\FlashPlayer\CurrentVersion&gt;

or

    reg query hklm\SOFTWARE\Macromedia\FlashPlayer\CurrentVersion &gt;&gt; set var

Yeah, as you can see I&#39;m a bit lost. Any and all help is appreciated!

Assign command output to variable in batch file

Windows has the [`setx`][1] command:

    Description:
        Creates or modifies environment variables in the user or system
        environment.

So you can set a variable like this:

    setx FOOBAR 1

And you can clear the value like this:

    setx FOOBAR &quot;&quot;

However, the variable does not get removed. It stays in the registry:

[![foobar][2]][2]

So how would you actually remove the variable?

  [1]: https://ss64.com/nt/setx.html
  [2]: http://i.stack.imgur.com/Lnjns.png



Command line to remove an environment variable from the OS level configuration

I need to access an environment variable remotely. To do this, I think the best way is to read it from registry.

Where are environment variables stored in the Windows Registry?




Where are environment variables stored in the Windows Registry?

Is there a way to do this?

Or I have to take manually every record from Registry?

How to export/import PuTTY sessions list?

As a developer, tools that store configuration/options in the registry are the bane of my life. I can&#39;t easily track changes to those options, can&#39;t easily port them from machine to machine, and it all makes me really yearn for the good old days of .INI files...

When writing my own applications, what - if anything - should I choose to put in the registry rather than in old-fashioned configuration files, and why?



When - and why - should you store data in the Windows Registry?

I get this error when I try to do anything with Java in command prompt:

    Error opening registry key &#39;Software\JavaSoft\Java Runtime Environment.3&#39;
    Error: could not find Java.dll
    Error: could not find Java 2 Runtime Environment

I did screw around with deleting Java directories and registry a few days ago. I restarted computer and java was still working fine, then i restarted it again today and now I get this error. I have tried uninstalling and reinstalling but that doesn&#39;t seem to work. I have the latest java JRE installed and the path set in the environment variables. Anyone have any clue how to fix this?


Java Error opening registry key

I have a c# unit test project that is compiled for AnyCPU. Our build server is a 64bit machine, and has a 64bit SQL Express instance installed.

The test project uses code similar to the following to identify the path to the .MDF files:

    private string GetExpressPath()
    {
        RegistryKey sqlServerKey = Registry.LocalMachine.OpenSubKey( @&quot;SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names\SQL&quot; );
        string sqlExpressKeyName = (string) sqlServerKey.GetValue( &quot;SQLEXPRESS&quot; );
        RegistryKey sqlInstanceSetupKey = sqlServerKey.OpenSubKey( sqlExpressKeyName + @&quot;\Setup&quot; );
        return sqlInstanceSetupKey.GetValue( &quot;SQLDataRoot&quot; ).ToString();
    }

This code works fine on our 32bit workstations, and did work ok on the build server until I recently enabled code coverage analysis with NCover. Because NCover uses a 32bit COM component, the test runner (Gallio) runs as a 32bit process.

Checking the registry, there is no &quot;Instance Names&quot; key under 

&gt; HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Microsoft SQL Server

Is there a way for an application running in 32bit mode to access the registry outside  Wow6432Node?

Reading 64bit Registry from a 32bit application

Given the key for some registry value (e.g. HKEY_LOCAL_MACHINE\blah\blah\blah\foo) how can I:

 1. Safely determine that such a key exists.
 2. Programmatically (i.e. with code) get its value.

I have absolutely no intention of writing anything back to the registry (for the duration of my career if I can help it). So we can skip the lecture about every molecule in my body exploding at the speed of light if I write to the registry incorrectly. 

Prefer answers in C++, but mostly just need to know what the special Windows API incantation to get at the value is.

How to read a value from the Windows registry

I&#39;m having trouble getting command line arguments passed to Python programs if I try to execute them directly as executable commands from a Windows command shell.  For example, if I have this program (test.py):

    import sys
    print &quot;Args: %r&quot; % sys.argv[1:]

And execute:

    &gt;test foo
    Args: []

as compared to:

    &gt;python test.py foo
    Args: [&#39;foo&#39;]

My configuration has:

    PATH=...;C:\python25;...
    PATHEXT=...;.PY;....
    
    &gt;assoc .py
    .py=Python.File
    
    &gt;ftype | grep Python
    Python.CompiledFile=&quot;C:\Python25\python.exe&quot; &quot;%1&quot; %*
    Python.File=&quot;C:\Python25\python.exe&quot; &quot;%1&quot; %*
    Python.NoConFile=&quot;C:\Python25\pythonw.exe&quot; &quot;%1&quot; %*

Windows is not passing command line arguments to Python programs executed from the shell

I&#39;m trying to get all the display names of the sub keys within this key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall

With this code:

&lt;!-- language-all: lang-cs --&gt;

         RegistryKey newKey;
         string val;

         string KeyPath64Bit = @&quot;SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall&quot;;
         RegistryKey mainKey = Registry.LocalMachine.OpenSubKey(KeyPath64Bit);

         string[] RegKeys64Bits = Registry.LocalMachine.OpenSubKey(KeyPath64Bit).GetSubKeyNames();

         foreach (string s in RegKeys64Bits)
         {
            newKey = mainKey.OpenSubKey(s);
            val = newKey.GetValue(&quot;DisplayName&quot;, -1, RegistryValueOptions.None).ToString();
            if (val != &quot;-1&quot;)
               file64.WriteLine(val);
         }

After running the code I can&#39;t find one of the keys I need:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{DA5E371C-6333-3D8A-93A4-6FD5B20BCC6E}

And it should have the display name: Microsoft Visual C++ 2010  x64 Redistributable - 10.0.30319, but instead the `GetSubKeyNames()` method gives me the sub key : `{DA5E371C-6333-3D8A-93A4-6FD5B20BCC6E}.KB2151757` which doesn&#39;t have any display name.

Why can&#39;t I get the exact sub key I need (`{DA5E371C-6333-3D8A-93A4-6FD5B20BCC6E}`) and how can I get it?

OpenSubKey() returns null for a registry key that I can see in regedit.exe

The private registry was worked well based on docker 1.10.3,but I can not pull/push images after the docker updated to 1.12.0.

I had modified the /etc/sysconfig/docker as:

    OPTIONS=&#39;--selinux-enabled=true --insecure-registry=myip:5000&#39;

or
    
    OPTIONS=&#39;--selinux-enabled=true --insecure-registry myip:5000&#39;

but when I exec pull/push,I got this error:
   
    $ docker pull myip:5000/cadvisor
    Using default tag: latest
    Error response from daemon: Get https://myip:5000/v1/_ping: http: server gave HTTP response to HTTPS client

when I change back docker to 1.10.3, it still work well as below:

    $ docker pull myip:5000/cadvisor
    Using default tag: latest
    Trying to pull repository myip:5000/cadvisor ... 
    latest: Pulling from myip:5000/cadvisor
    09d0220f4043: Pull complete 
    a3ed95caeb02: Pull complete 
    151807d34af9: Pull complete 
    14cd28dce332: Pull complete     
    Digest:
    sha256:33b6475cd5b7646b3748097af1224de3eee3ba7cf5105524d95c0cf135f59b47
    Status: Downloaded newer image for myip/cadvisor:latest
Some relative information are listed below:
    
    docker version
    Client:
    Version: 1.12.0
    API version: 1.24
    Go version: go1.6.3
    Git commit: 8eab29e
    Built:

    OS/Arch: linux/amd64

    Server:
    Version: 1.12.0
    API version: 1.24
    Go version: go1.6.3
    Git commit: 8eab29e
    Built:

    OS/Arch: linux/amd64

    docker info
    Containers: 4
    Running: 1
    Paused: 0
    Stopped: 3
    Images: 241
    Server Version: 1.12.0
    Storage Driver: devicemapper
    Pool Name: docker-253:0-6809-pool
    Pool Blocksize: 65.54 kB
    Base Device Size: 107.4 GB
    Backing Filesystem: xfs
    Data file: /dev/loop0
    Metadata file: /dev/loop1
    Data Space Used: 5.459 GB
    Data Space Total: 107.4 GB
    Data Space Available: 34.74 GB
    Metadata Space Used: 9.912 MB
    Metadata Space Total: 2.147 GB
    Metadata Space Available: 2.138 GB
    Thin Pool Minimum Free Space: 10.74 GB
    Udev Sync Supported: true
    Deferred Removal Enabled: false
    Deferred Deletion Enabled: false
    Deferred Deleted Device Count: 0
    Data loop file: /var/lib/docker/devicemapper/devicemapper/data
    WARNING: Usage of loopback devices is strongly discouraged for production use. Use &#39;--storage-opt dm.thinpooldev&#39; to specify a custom block storage device.
    Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
    Library Version: 1.02.107-RHEL7 (2016-06-09)
    Logging Driver: json-file
    Cgroup Driver: cgroupfs
    Plugins:
    Volume: local
    Network: host overlay null bridge
    Swarm: inactive
    Runtimes: runc
    Default Runtime: runc
    Security Options: seccomp
    Kernel Version: 3.10.0-229.el7.x86_64
    Operating System: CentOS Linux 7 (Core)
    OSType: linux
    Architecture: x86_64
    CPUs: 24
    Total Memory: 62.39 GiB
    Name: server_3
    ID: TITS:BL4B:M5FE:CIRO:5SW6:TVIV:HW36:J7OS:WLHF:46T6:2RBA:WCNV
    Docker Root Dir: /var/lib/docker
    Debug Mode (client): false
    Debug Mode (server): true
    File Descriptors: 21
    Goroutines: 32
    System Time: 2016-08-02T10:33:06.414048675+08:00
    EventsListeners: 0
    Registry: https://index.docker.io/v1/
    WARNING: bridge-nf-call-iptables is disabled
    WARNING: bridge-nf-call-ip6tables is disabled
    Insecure Registries:
    127.0.0.0/8

    docker exec &lt;registry-container&gt; registry -version
    registry github.com/docker/distribution v2.2.1

After I restart the docker daemon in debug mode, the daemon logs when reproducing my problem are listed below:

    DEBU[0794] Calling POST /v1.24/images/create?fromImage=10.10.10.40%3A5000%2Fcadvisor&amp;tag=latest 
    DEBU[0794] hostDir: /etc/docker/certs.d/10.10.10.40:5000 
    DEBU[0794] hostDir: /etc/docker/certs.d/10.10.10.40:5000 
    DEBU[0794] Trying to pull 10.10.10.40:5000/cadvisor from https://10.10.10.40:5000 v2 
    WARN[0794] Error getting v2 registry: Get https://10.10.10.40:5000/v2/: http: server gave HTTP response to HTTPS client 
    ERRO[0794] Attempting next endpoint for pull after error: Get https://10.10.10.40:5000/v2/: http: server gave HTTP response to HTTPS client
    DEBU[0794] Trying to pull 10.10.10.40:5000/cadvisor from https://10.10.10.40:5000 v1 
    DEBU[0794] hostDir: /etc/docker/certs.d/10.10.10.40:5000
    DEBU[0794] attempting v1 ping for registry endpoint https://10.10.10.40:5000/v1/
    DEBU[0794] Fallback from error: Get https://10.10.10.40:5000/v1/_ping: http: server gave HTTP response to HTTPS client 
    ERRO[0794] Attempting next endpoint for pull after error: Get https://10.10.10.40:5000/v1/_ping: http: server gave HTTP response to HTTPS client
    ERRO[0794] Handler for POST /v1.24/images/create returned error: Get https://10.10.10.40:5000/v1/_ping: http: server gave HTTP response to HTTPS client 
    DEBU[1201] clean 2 unused exec commands

What&#39;s more, I just run a simple command to launch the private registry for test, anything else is by default:

    docker run -d -p 5000:5000 --restart=always --name registry -v &#39;pwd&#39;/data:/var/lib/registry registry:2

No proxy is configured. In summary, it is only a quiet sample environment for test.


Can not pull/push images after update docker to 1.12

Is there any way to change or reset the global npm registry.

Appreciate your assistance. 

How to reset the npm registry in global npm config

How to check if a registry value exists by C# code?
This is my code, I want to check if &#39;Start&#39; exists.

    public static bool checkMachineType()
    {
        RegistryKey winLogonKey = Registry.LocalMachine.OpenSubKey(@&quot;System\CurrentControlSet\services\pcmcia&quot;, true);
        string currentKey= winLogonKey.GetValue(&quot;Start&quot;).ToString();

        if (currentKey == &quot;0&quot;)
            return (false);
        return (true);
    }

How to check if a registry value exists using C#?

At start up of my application I am trying to see if the user has a specific version of a software installed, specifically the MySQL connector, all using c#. In the registry, the MySQL contains a version entry. So what I am trying to accomplish is this. 

My app starts up. Somewhere in the start up code I need to do the following things in order. Check to see if the user has the MySQL connector installed, which is located at...

&gt; `HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MySQL AB\MySQL Connector/Net`

If the user has the connector installed, I wanted to check what version they have, which is stored as Name = &quot;Version&quot; and Data = x.x.x (Picture below)

Now if the user has a specific version installed, then I will execute other code, which is where I can take from.

What would be the best way of going about this?

![enter image description here][1]


  [1]: http://i.stack.imgur.com/6KXds.png

**EDIT:** Below is the code I currently have and I am getting an error on line 19 (It is commented). My error says &quot;`error CS1001: Identifier Expected`&quot; I wasnt able to figure out what that means. Any help?

    using System;
    using Microsoft.Win32;
    using System.Data;
    
    public class regTest
    {
    	public static void Main()
    	{
    		try
    		{
    			RegistryKey key = Registry.LocalMachine.OpenSubKey(&quot;Software\\Wow6432Node\\MySQL AB\\MySQL Connector\\Net&quot;);
    			if (key != null)
    			{
    				Object o = key.GetValue(&quot;Version&quot;);
    				if (o != null)
    				{
                		Version version = new Version(o as String);  //&quot;as&quot; because it&#39;s REG_SZ...otherwise ToString() might be safe(r)
                		Version broken = new Version(&quot;6.7.4&quot;);
                		if (version.Equals.(broken)) //This is where the error is occuring
                		{
                			DataSet dataSet = ConfigurationManager.GetSection(&quot;system.data&quot;) as ystem.Data.DataSet;
    
                			DataView vi = dataSet.Tables[0].DefaultView;
                			vi.Sort = &quot;Name&quot;;
                			if (vi.Find(&quot;MySql&quot;) == -1)
                			{
                				dataSet.Tables[0].Rows.Add(&quot;MySql&quot;
                					, &quot;MySql.Data.MySqlClient&quot;
                					, &quot;MySql.Data.MySqlClient&quot;
                					,
                					typeof(MySql.Data.MySqlClient.MySqlClientFactory).AssemblyQualifiedName);
                			}
    
                		}
                		
                	}
                }
            }
    
    		catch (Exception ex)  //just for demonstration...it&#39;s always best to handle specific exceptions
    		{
       			 //react appropriately
    		}
    	}
    }

How to read value of a registry key c#

I need to use a REG QUERY command to view the value of a key and set the result into a variable with this command:

    FOR /F &quot;tokens=2* delims=	 &quot; %%A IN (&#39;REG QUERY &quot;KeyName&quot; /v ValueName&#39;) DO SET Variable=%%B

But if the key doesnt exists i get an error shown in the console. I need to hide this error! I tried putting a 2&gt;nul after the command to stop the stderr, but this works if i only call the command:

    REG QUERY &quot;KeyName&quot; /v ValueName 2&gt;nul

If i put it into the FOR command like this:

    FOR /F &quot;tokens=2* delims=	 &quot; %%A IN (&#39;REG QUERY &quot;KeyName&quot; /v ValueName&#39;) DO SET Variable=%%B 2&gt;nul

The error is shown.
So does anyone know how to hide the error? Or maybe another command too see if a key exists or not?

Thanks

PS: I&#39;m using Windows XP

How can I get the value of a registry key from within a batch script?

I made an application that launches during startup, with the next code below.  
The process runs on the process manager tool after the restart, but I can&#39;t see
the application on the screen.
When I open the same .exe file from the startup registry value the program runs perfect.

    // The path to the key where Windows looks for startup applications
    RegistryKey rkApp = Registry.CurrentUser.OpenSubKey(&quot;SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run&quot;, true);

    // Add the value in the registry so that the application runs at startup
    rkApp.SetValue(&quot;MyApp&quot;, Application.ExecutablePath.ToString());

What can I do to fix it up?

How to run a C# application at Windows startup?

**Introduction**

I&#39;ve always been searching for a way to make Visual Studio draw a line after a certain amount of characters.

Below is a guide to enable these so called *guidelines* for various versions of Visual Studio.

**Visual Studio 2013 or later**

Install Paul Harrington&#39;s [Editor Guidelines extension][2]. 

**Visual Studio 2010 and 2012**

1. Install Paul Harrington&#39;s Editor Guidelines extension for [VS 2010][3] or [VS 2012][4].
2. Open the registry at:
&lt;br /&gt;VS 2010: `HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\10.0\Text Editor`
&lt;br /&gt;VS 2012: `HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\11.0\Text Editor`
&lt;br /&gt;and add a new string called `Guides` with the value `RGB(100,100,100), 80`. The 
first part specifies the color, while the other one (`80`) is the column the line will be displayed.
3. Or install the [Guidelines UI][5] extension (which is also a part of the [Productivity Power Tools][6]), which will add entries to the editor&#39;s context menu for adding/removing the entries without needing to edit the registry directly. The current disadvantage of this method is that you can&#39;t specify the column directly.

**Visual Studio 2008 and Other Versions**

If you are using Visual Studio 2008 open the registry at `HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\9.0\Text Editor` and add a new string called `Guides` with the value `RGB(100,100,100), 80`. The first part specifies the color, while the other one (`80`) is the column the line will be displayed. The vertical line will appear, when you restart Visual Studio.

This trick also works for various other version of Visual Studio, as long as you use the correct path:

    2003: HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\7.1\Text Editor
    2005: HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\8.0\Text Editor
    2008: HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\9.0\Text Editor
    2008 Express: HKEY_CURRENT_USER\Software\Microsoft\VCExpress\9.0\Text Editor

[This also works in SQL Server 2005 and probably other versions.][7]


  [2]: http://visualstudiogallery.msdn.microsoft.com/da227a0b-0e31-4a11-8f6b-3a149cf2e459/view/Reviews
  [3]: http://visualstudiogallery.msdn.microsoft.com/0fbf2878-e678-4577-9fdb-9030389b338c
  [4]: http://visualstudiogallery.msdn.microsoft.com/da227a0b-0e31-4a11-8f6b-3a149cf2e459?SRC=Home
  [5]: http://visualstudiogallery.msdn.microsoft.com/en-us/7f2a6727-2993-4c1d-8f58-ae24df14ea91
  [6]: http://visualstudiogallery.msdn.microsoft.com/d0d33361-18e2-46c0-8ff2-4adea1e34fef/
  [7]: https://stackoverflow.com/a/332577/11387

Adding a guideline to the editor in Visual Studio

I need to develop a process that will detect if the users computer has certain programs installed and if so, what version. I believe I will need a list with the registry location and keys to look for and feed it to the program which is not a problem. Is there a better way to accomplish this?

My first thought was to check in the registry in the uninstallation entries but it seems one of the apps I wish to detect does not have one. What is the standard location for all registry using applications to make an entry in?

Detecting installed programs via registry

How is it possible to read/write to the Windows registry using Java?

Read/write to Windows registry using Java

I know that we shouldn&#39;t being using the registry to store Application Data anymore, but in updating a Legacy application (and wanting to do the fewest changes), what Registry Hives are non-administrators allowed to use?  

Can I access all of `HKEY_CURRENT_USER` (the application currently access `HKEY_LOCAL_MACHINE`) without Administrator privileges?  

What registry access can you get without Administrator privileges?

I&#39;ve written a program that edits a specific filetype , and I want to give the user the option to set my application as the default editor for this filetype (since I don&#39;t want an installer) on startup.

I&#39;ve tried to write a re-useable method that associates a file for me (preferably on any OS, although I&#39;m running Vista) by adding a key to HKEY_CLASSES_ROOT, and am using it with my application, but it doesn&#39;t seem to work.


    public static void SetAssociation(string Extension, string KeyName, string OpenWith, string FileDescription)
    {
        RegistryKey BaseKey;
        RegistryKey OpenMethod;
        RegistryKey Shell;
        RegistryKey CurrentUser;
    
        BaseKey = Registry.ClassesRoot.CreateSubKey(Extension);
        BaseKey.SetValue(&quot;&quot;, KeyName);
    
        OpenMethod = Registry.ClassesRoot.CreateSubKey(KeyName);
        OpenMethod.SetValue(&quot;&quot;, FileDescription);
        OpenMethod.CreateSubKey(&quot;DefaultIcon&quot;).SetValue(&quot;&quot;, &quot;\&quot;&quot; + OpenWith + &quot;\&quot;,0&quot;);
        Shell = OpenMethod.CreateSubKey(&quot;Shell&quot;);
        Shell.CreateSubKey(&quot;edit&quot;).CreateSubKey(&quot;command&quot;).SetValue(&quot;&quot;, &quot;\&quot;&quot; + OpenWith + &quot;\&quot;&quot; + &quot; \&quot;%1\&quot;&quot;);
        Shell.CreateSubKey(&quot;open&quot;).CreateSubKey(&quot;command&quot;).SetValue(&quot;&quot;, &quot;\&quot;&quot; + OpenWith + &quot;\&quot;&quot; + &quot; \&quot;%1\&quot;&quot;);
        BaseKey.Close();
        OpenMethod.Close();
        Shell.Close();
    
        CurrentUser = Registry.CurrentUser.CreateSubKey(@&quot;HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\&quot; + Extension);
        CurrentUser = CurrentUser.OpenSubKey(&quot;UserChoice&quot;, RegistryKeyPermissionCheck.ReadWriteSubTree, System.Security.AccessControl.RegistryRights.FullControl);
        CurrentUser.SetValue(&quot;Progid&quot;, KeyName, RegistryValueKind.String);
        CurrentUser.Close();
    }

Any idea why it doesn&#39;t work? An example use might be 

    SetAssociation(&quot;.ucs&quot;, &quot;UCS_Editor_File&quot;, Application.ExecutablePath, &quot;UCS File&quot;); 

The part of the method that uses &quot;CurrentUser&quot; seems to work if I do the same using regedit, but using my application it doesn&#39;t.



Associate File Extension with Application

How can I change the Java Runtime Version on Windows.

I installed Java&amp;nbsp;7 for some tests, and now I need the old java6 as system default, but I don&#39;t want to uninstall the Java&amp;nbsp;7 (I need it for later tests). Can I change the system-used [JRE][1] in the control panel/Java/JRE tab? I can change/edit/add/delete the user-used version, but not the system-used.

  [1]: https://en.wikipedia.org/wiki/Java_virtual_machine


How can I change the Java Runtime Version on Windows (7)?

I&#39;m trying to run this reg code in cmd (bat file), but I couldn&#39;t make it work. Where am I doing wrong?

    [HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Control Panel]
    &quot;HomePage&quot;=dword:00000001

It works if I make it a reg file and double click.

Bat file code (this doesn&#39;t work, no errors):

    @echo off
    reg add &quot;HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel&quot; /V HomePage /T REG_DWORD /F /D 1


Run reg command in cmd (bat file)?

In the Windows registry, how does `CurrentControlSet` differ from
`ControlSet001` and `ControlSet002`? Which should be set when installing for all
users?

We are trying to add an environment variable for all users. Is this correct?

    HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Envinronment

How does CurrentControlSet differ from ControlSet001 and ControlSet002?

I have some code that reads the registry and looks for a value in `HKEY_LOCAL_MACHINE\Software\App\` but when running on 64-bit versions of Windows the value is under `HKEY_LOCAL_MACHINE\Software\Wow6432Node\App\`. 

How should I best approach this? Do I need a 64-bit installer or should I rewrite my code to detect both places?

Reading the registry and Wow6432Node key

I&#39;m getting, &quot;Could not load file or assembly &#39;Bla&#39; or one of its dependencies. An attempt was made to load a program with an incorrect format.&quot;

A portion of the detailed info says:

*&quot;WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].&quot;*

So, thinking this may give me some insight in why I&#39;m getting the error above (maybe the next YSOD would contain more explicit information about exactly why it&#39;s failing), I navigated to that location in the registry, but there is no such key that I can see. What it does have is:

    \Fusion	
    	(Default)	value not set
    	\GACChangeNotification
    	\NativeImagesIndex
    	\PublisherPolicy

What am I missing?

All Registry Solutions on Gang of Coders

Total of 37 Registry Solutions