Completely remove Google Backup and Sync from my Mac

Solution 1:

Moving of the Backup and Sync from Google app to the Trash and emptying it only removes the application bundle. It doesn't uninstall the Finder Sync Extension, application script, APFS container, preferences, etc.

You'd also want to remove the following & reboot:

~/Library/Application\ Scripts/com.google.GoogleDrive.FinderSyncAPIExtension
~/Library/Caches/com.google.GoogleDrive
~/Library/Containers/com.google.GoogleDrive.FinderSyncAPIExtension
~/Library/Cookies/com.google.GoogleDrive.binarycookies
~/Library/Group\ Containers/google_drive
~/Library/Preferences/com.google.GoogleDrive.plist

Solution 2:

From Google Support - Stop syncing Google Drive files with Backup and Sync

It doesn't specify exactly, but I'd guess you need to disable/dosconnect it first before you can uninstall it...

Disconnect your account

To stop syncing completely, you can sign out of your account.

1. On your computer, click Backup and Sync .
2. Click More ⋮ > Preferences.
3. Click Settings.
4. Click Disconnect account.
5. Click Disconnect.

Pause or resume Backup and Sync

To temporarily stop syncing, you can pause the app.

1. On your computer, click Backup and Sync .
2. Click More ⋮.
3. Click Pause or Resume.

Uninstall Backup and Sync

Mac

After you uninstall Backup and Sync, you can still find your files at drive.google.com.

1. Open Finder and click Applications.
2. Drag the "Backup and Sync" app into the Trash on your dock.
3. In the top left of your screen, click Finder > Empty Trash.