To avoid this, you might back up your game files.
However, if you catch the Steam backup not working issue, how to fix it?
Read this post fromMiniToolto learn how to fix Steam backup not working.
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Why Steam Backup Not Working
Backup is one of the features of Steam.
You may wonder why Steam backup not working on Windows.
There are multiple reasons for that error.
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If the web link connection has no problem, you should try the following methods.
Here are the specific steps.
If there are any problems, the bad files will be replaced.

What you’ve got the option to do is to delete those files.
Here are the steps to delete them.
Once you completed these operations, you have deleted files successfully.

Some users report that they lost their Steam save files by accident.
This post introduces how to recover Steam save files in different ways.
The guidelines are as follows.
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Now you could open Steam to see if your game files can be backed up normally.
Here are the operations.
Step 1:Open theControl Paneland change theView bytoLarge icons.
Step 2: ChooseWindows Defender Firewall>Turn Windows Defender Firewall on or off.
Step 3: Turn off the Firewall underPrivate data pipe settingsandPublic data pipe prefs.
Remember to unlock the Firewall again to protect your gear after the backup is completed.
This backup tool MiniTool ShadowMakerhas a powerful data backup function.
In addition, it also supports backing up disk partitions and Windows systems.
This tool is free for up to thirty days.
Step 3: Click onDESTINATION, choose the target path to save the backup files, and click onOK.
Step 4: Click onBack Up Nowto start the backup process.
Want to backup your game saves to avoid losing gaming data?
Wrapping Things Up
This article lists several ways to fix the Steam backup not working error.
With these methods, hope you’re free to solve the problem successfully.