"Couldn't upload. Try again." error on Google Play Console

When I try to upload my Android App Bundle to the Google Play Console, I get this generic error message saying "Couldn't upload. Try again.".

I've already tried:

• making sure my versionName and versionCode are unique among all uploaded artifacts
• making sure that the .aab/.apk is signed with the proper key
• re-uploading the .AAB file
• re-uploading the .APK file
• checking status of google services to make sure that there isn't a mass outage
• asking my senior Android dev what's up

How do I resolve this error and upload my .AAB or .APK?

Google Chrome

Use a new Incognito window to upload the .aab or .apk (as mentioned in the comments).

Alternatively, clear the website data:

1. going to: developer console (F12) > Application > Storage > Clear site data
   • Screenshot
2. press F5 to refresh the page
3. uploading the .apk/.aab again

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Safari

Open Preferences > Privacy > Manage Website Data > Remove All > Done

Here's what worked for me: After getting the error on play console. Now use 'Add from Library' option instead of 'Upload', and you will find your appbundle that failed to upload there, select it and proceed with further steps.

This problem comes out due to multiple gmail logins on same browser, if the developer account is not the default logged in account. You can solve this by signing out all gmail accounts and login in the specific gmail account.

For my case clearing data, using Incognito or changing browser did not work. So, finally I uploaded an APK file (all previous versions were AAB files) and surprisingly Google Play console accepted it!

Give a chance to APK file if the above answers are not helping you.

Do you have gmail with another account, opened in other tab? If so, sign out from both accounts, then sign in to Google Play console again.

I could simply solve the problem by usinng Firefox instead of Chrome. Nothing else helped. With Chrome the problem remained even after applying all the suggestions above. Chrome 56, OS Ubuntu 16.04

If your zip align is not successful or verification failed at the end of the zip align process, this error is likely to occur. Please analyze whether zip align was successful. Also, you can try uploading both in .apk and .aab format. You are more likely to get a more detailed error hinting a possible cause.

If you're using Unity

I was trying to upload a Unity project. Clearing browser cache, loging out of accounts, trying different browsers, zip align etc. didn't help for me. What did, was to either:

a. Upload an .apk instead of an app bundle.

For some reason, this works completely fine, but app bundles fail every time.

Sadly, apks be unavailable for new apps starting from August 2021 :(

b. Upgrade to a newer version of Unity

Versions that did not work:

• 2019.4.20

Versions that worked:

• 2020.3.3

Play Console's error message is not especially helpful, so it's difficult to say exactly what the problem was or what fixed it, but hopefully this will help someone else using Unity.

I haven't tested any Unity versions except those listed above. If you have and also have the necessary stackoverflow rights, feel free to update my list with your own findings.

On Safari:

Preferences -> Privacy -> Manage Website Data -> Google (remove that) did it for me! ;-)

After that error happened to me, I click "Add From Library" and my uploaded app bundle showed up there, and am able to select it.

No need to logout/login or clear the cache/cookies.