There may be a number of reasons for the issue few I have listed below;
Updated or Older macOS versionMissing Library FilePermission issues for Google directory in Application SupportIncorrect Installation
How to Fix Google Backup and Sync Fatal Error?
Here are the Best Solution to Fix Backup and Sync Fatal Error for Google Drive on your Mac PC
Create a Library Folder
If you face a Fatal Error on your MacBook for the Backup and Sync app. Then the issue may due to the system application folder. You can fix the issue by creating a Google Folder in Application support. There are two ways for creating the application folder. Let’s check the easy one first; Step 1. Open Finder
Step 2. Click command⌘+shift+G Step 3. A Go to the Folder tab will open
Step 4. Type the following command
Step 5. A Library system folder will be opened, here click on the Setting icon on the top and click on New Folder
Step 6. A New Folder will be created, name the folder as Google
Step 7. Restart the PC and the Backup and Sync App will open without any error.
Alternative Method to Create Google Folder
Click on Finder from the Dock bar
Now hit the Internal Storage Folder.Open the Mac HD DriveClick on UsersOpen your Local User FolderClick on Library Folder
If the Library folder is not visible use the following trick;
Open FinderClick command⌘+shift+GA Go to Folder tab will openType the following command
Now in the library folder click on the Setting icon and click on New FolderA New Folder will be created, name the folder as Google
Restart the PC and the Backup and Sync App will open without any error.
Use Terminal Command
You can also use Terminal Commands to fix the Backup and Sync error on your Mac PC; Step 1. Open Terminal. Enter command⌘+spacebar to open spotlight and search for Terminal.
Step 2. Type the following command in the terminal.
Step 3. Now, enter the following commands into Terminal to create the necessary Application Support directory. You will have to enter the mac password to run the command successfully.
Step 4. Enter the command below. You must replace the username with your username in the command below. This command makes sure that your user owns the Drive directory you just created:
Done! open the Backup and Sync app and you will see the issue is fixed.
Update the Backup and Sync
If you have recently updated your macOS but still using an older version of the Google Backup app then the error is inevitable. The best solution is to download the latest version of the software from the Google website. Step 1. Download Backup And Sync (∼50MB) from Google Drive for Mac Step 2. Click on the downloaded file and install the application.
Step 3. Once the app is installed, open the app from your application drawer.
Step 4. The app will open and you see a cloud icon on the right-top of the menu bar.
Step 5. Click on the icon, if you be not already logged in, click on Add New Account.
Step 6. Once the account is added, you can backup and sync across Google Drive and MacBook.
Delete Folder and Reinstall Application
There may be some issues with the installation process itself. You can delete the Google Drive folder from the library and reinstall the Backup and Sync app on your Mac PC. To delete the drive from the application library;
Open FinderClick command⌘+shift+GA Go to Folder tab will openType the following command
Google Folder will openDelete the Drive Folder
Again Install the Application
I hope the post was helpful for you to fix the Google Backup and Sync Encountered Fatal Error that may have caused due to various critical factors on your mac OS.