This error has been known to occur as a result of one of the following causes: the incorrect status setting of Volume Shadow Copy service, corrupted data inside the WindowsImageBackup folder, or corrupted system files. If you come across the same 0x80780166 error message, we have a few working tips for you. To be more precise, down below, you’ll find a collection of potential repair strategies that other users in a similar situation have successfully used to solve the issue.
What can I do if getting the 0x80780166 error?
1. Check Volume Shadow Copy Service
Firstly, you should verify if the Volume Shadow Copy Service (VSS) is running properly. Apply the above steps to perform the procedure.
2. Delete the WindowsImageBackup folder
There are times when the drive where you want to store the backup contains the leftover files of the previous backups. This error code often occurs if the previous backup procedure was interrupted or didn’t have enough space to complete, yet cleaning the WindowsImageBackup folder solves it.
3. Use the System Restore utility
Several concerned users reported that the error continues to occur after executing the above instructions. If you’re one of them too, don’t hesitate to restore your computer state back to a previous point when the issue wasn’t occurring. Worried about restoring Windows? Check this guide and creating a system restore point will be like a walk in the park. If there are corrupted system files on your computer, you may also encounter the Windows 10 backup 0x80780166 error when running a backup. So, other potential fixes are running DISM to fix the corrupted system files or eventually performing a repair/clean install. Do you know any other fixes? Share them with the other readers via the comments section below.
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