User case: Backup and Sync -
can’t connect error
“I upload PDF files to my Google Drive folder. Now I’m trying to upload them to cloud. I get
“Can’t Connect” error. cFosSpeed shows PC uploads something but the same files were not
completed (or any other files). How to fix this?”
and Sync can be understood as the desktop client of Google
Drive. This tool is designed to help users to backup and access Google files and photos
from their computers. Recently, many users have discovered that Google Backup and Sync
“can’t connect” error prevents them from using this program normally. Don't worry too
much, this article will solve this problem for you.
Why Backup and Sync cannot connect on Mac or PC?
Before we introduce the "solutions", let me remind you why Google Backup and Sync
unable to connect on Mac or PC.
Google Backup and Sync, like all applications and software, will occasionally have errors and
problems. Google Backup and Sync can't connect is one of these common problems. Why
Backup and Sync does not work? The reason may be a network problem, the program is
blacklisted by anti-virus software, the user account lacks admin rights, and the account
connected with the agent, etc.
How to fix Google Backup and Sync can’t
If the program that the user is using suddenly fails, this will cause great inconvenience.
This page will provide some effective solutions and simple steps to repair Google Backup and
Sync can't connect on Mac or PC.
Method 1. Reinstall the latest version of the program
Maybe the version of the program you installed is relatively old or damaged, try to download
the latest Backup and Sync to solve the problem.
Step 1. Follow the normal steps to uninstall Google Backup and Sync on your computer.
Mac: Open the Finder, click Applications, drag "Backup and Sync" to the Trash at
the bottom, navigate to the “Go” menu, select "Library", and delete the "Application
Support / Google / Drive" folder.
Windows: Press Windows + I, then click Apps, select "Apps & features" on the
left, enter "Backup and Sync" in the search box, find the program, and click
Step 2. Navigate to google.com/drive/download/,
download, and install the latest version of Backup and Sync.
Step 3. Open the latest version of the program, log in to your account, and check whether it
can be used normally.
Method 2. Check Firewall/ Antivirus Programs
Google Backup and Sync unable to connect is sometimes caused by excessive protection by
firewalls or antivirus programs.
Step 1. On the computer's Control Panel, click System and Security, then select Windows
Firewall, then click Allow an app through Windows Firewall.
Step 2. Then you can see the list of all services allowed/prohibited by Firewall.
Step 3. Search for “Backup and Sync”, and enable it under both Private and Public column.
If you are using antivirus software, please check its settings to ensure that Backup and Sync
is allowed, or you can delete the anti-virus software. Then check if you can log in to the
Google backup application and use it normally.
Method 3. Run Backup and Sync as Administrator
The lack of user account admin rights may also lead to failure to connect on Google Backup
Step 1. Right-click the desktop shortcut of Google Backup and Sync and click Properties.
Step 2. In the pop-up window, go to the Compatibility tab.
Step 3. Then click the option Run as administrator.
Try to re-enter Google Backup and Sync, and confirm whether the program can be used
Method 4. Change proxy settings
If you set up a proxy to connect to the Google account, you may not be able to connect the
Step 1. Click the desktop shortcut of Backup and Sync and select "Preferences".
Step 2. Click Settings on the left, and then click NETWORK SETTINGS below.
Step 3. Turn off Auto-detect proxy settings option and enable the Direct connection
Bonus Tip: Turn on Backup and Sync in the correct way
Make sure that the backup steps you perform with Backup and Sync are correct to avoid
On your computer, download and install Backup and Sync.
Sign in to the Google Account that you use for Google Drive.
Select the file you want to back up.
Under 'Photo and video upload size', select the upload size.
An Advanced Method to Backup Google Drive Files- CBackupper
As a desktop application, Google Backup and Sync is prone to problems due to computing
systems and some network conditions. It is a waste of time to repair from time to time,
especially when you are in urgent need of use, the cumbersome repair may make you very
You can use the third-party cloud service - CBackupper to back up Google Drive files if you
are tired of handling various issues when using Backup and Sync. CBackupper is an advanced
and professional online cloud service. CBackupper supports cloud to
cloud backup. You can use CBackupper to backup Google Drive files to other cloud
disks to avoid Backup and Sync failure. you can also manage
multiple cloud storage accounts to combine small storage space into a larger backup
Shown below are the steps to back up Google Drive files via CBackupper.
Step 1. Sign up an account on CBackupper,
if you already have an account, you can sign in directly.
Step 2. Click Add Clouds to authorize Google Drive account. Then click OK to add it. You can
also add other cloud storage accounts. And all the accounts you added will be listed under
CBackupper can also help you back up files on Google Drive to other cloud drives (such as
Dropbox, OneDrive, etc.). Follow the steps below to continue.
Step 3. Click Create Task under the Tasks tab.
Step 4. Click Add Source to add Google Drive as a transfer source, and click Add Destination
to add another cloud drive as a backup destination.
Step 5. Finally, click Start Backup to execute the backup task.
This is all about the causes and solutions of Google Backup and Sync can't connect on Mac
or PC. These detailed steps will help you solve this problem. However, Google Backup and
Sync may also crash due to other problems, which is troublesome and time-consuming to
repair. Don't forget to use the professional CBackupper to backup and manage your cloud