"AndroidManifest.xml doesn't exist or has incorrect root tag" Error

Solution 1:

clicking on Sync project with Gradle files button will solve your problem.

That button is under File section on Android Studio 3.6.1

Solution 2:

1. Close your Android Studio
2. Goto C:\Users\user\.AndroidStudioX.X\system and DELETE the cache folder
3. Launch the Android Studio
4. Goto Build (menu) -> Clean Project when done click the Build (menu) again and click rebuild project.

That should solve the problem.

Solution 3:

Click on File > Invalidate Cache/Restart, and that's it. Your project should start working.

Solution 4:

For me clicking on Sync project with Gradle files button did not solve the problem alone.

After Syncing project with Gradle files, I explicitly had to invalidate the cache and restart studio. Only after this action, the red cross-mark over configuration disappeared and everything started working.

Solution 5:

In my case, my android project got corrupted and some of the files were showing characters, binary numbers, etc. I tried the following solutions

1. Invalidate & Restart
2. Rebuild Project
3. Sync with Gradle File

But none of the above solutions worked for me.

Then I just deleted the cache folder under C:\Users\username\.AndroidStudio3.6\system

and all the invalid characters disappeared and the actual contents of all the files were displayed. This solution worked for me.