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You probably keep your most important files and photos in different places—your computer, your phone, various SD cards, and that digital camera you use from time to time. It can be a challenge to keep all these things safe, backed up, and organized, so today we’re introducing Backup and Sync. It’s a simpler, speedier and more reliable way to protect the files and photos that mean the most to you. This new tool replaces the existing Google Photos desktop uploader and Drive for Mac/PC.
Backup and Sync is an app for Mac and PC that backs up files and photos safely in Google Drive and Google Photos, so they're no longer trapped on your computer and other devices. Just choose the folders you want to back up, and we’ll take care of the rest.
Backup and Sync works for both Google Photos (download) and Google Drive (download).For more details on how Backup and Sync works, visit the Help Center. If you’re a G Suite customer, head on over to the G Suite Updates blog to better understand the desktop applications available to your organization.
Solved it! It was a combination of many solutions presented above, but I just had to put them in the right order:
I deleted the Google Drive File Stream app, emptied the trash
I reinstalled the app (still gave an error when trying to log in)
I went to the Finder folder Library --> Application Support --> Google.
I renamed the folder DriveFS to DriveFS.old
Google Drive Extension For Mac Computer
I was now able to log into the app, but it still gave an error accessing the files:
Google Drive On Mac
I then went to GO --> Utilities --> Terminal in order to overwrite the Gatekeeper
I entered: sudo spctl --master-disable
Then I entered my password (it’s not visible that you enter something, but the key strokes are noted)
After this I went to system preferences --> Security & Privacy
Under ‘Allow apps downloaded from’ the option ‘Anywhere’ was now visible and automatically enabled
Also, it now showed the text ‘System software from developer “Google, Inc.” was blocked from loading’. --> click 'Allow'
Google Drive Share Extension Mac
Then when reopening the app, it would start downloading all my files.