After investigating this issue, it turns out that there are several different causes that might end up causing this particular error. Here’s a shortlist of potential culprits that might be responsible for this issue: Now that you are familiar with every potential culprit that might be responsible for this issue, here’s a list of methods that other affected users have successfully used to fix the 0x8100002F error code:
Method 1: Exclude or Move the Problematic Library File
If the issue is occurring if you attempt to back up a library that contains custom folders located under your user profile, you can simply ignore the 0x8100002F error code altogether. However, if you want to do something about it to ensure that the next backup doesn’t return the same error, you have 2 options available to you:
Move the library folder from the user profile path to a location outside the user profile path. Exclude the library from the list of files that Windows Backup backs up.
To accommodate both potential fixes, we have put together 2 separate sub-guides. Make sure to follow the one applicable to the type of fix that you want to implement.
A. Moving the problematic Library Folder
B. Excluding the Problematic Library Folder
Note: We’ve made the instructions below universal so you can follow them on Windows 7 and Windows 10. If the backup attempt ends with the same 0x8100002F error code even after you followed the instructions above, move down to the next potential fix below.
Method 2: Exclude LocalLow, Contacts, and Searches Folders
If the reason why you are seeing the 0x8100002F error is that Windows is unable to back up the LocalLow, Contacts, and Searches folders, you can avoid the error by modifying the Windows Backup to specifically avoid those locations. Several affected users have confirmed that the instructions below have finally allowed them to complete the backup process without seeing the same 0x8100002F error. Here are the step-by-step instructions that will show you how to exclude the LocalLow, Contacts, and Searches folders from the current Windows Backup attempt and future attempts: In case this method didn’t allow you to fix the 0x8100002F error code, move down to Method 3.
Method 3: Updating or Uninstalling the NVIDIA USB EHCI Chipset
If the reason why you are encountering the 0x8100002F error is a conflict between the NVIDIA USB Enhanced Host Controller Interface (EHCI) chipset driver and a generic equivalent, you can fix the issue by updating or uninstalling the NVIDIA USB EHCI chipset driver. Several affected users that were dealing with the same issue have managed to fix the issue by updating the dedicated Nvidia driver or by uninstalling it and allowing the generic driver to take its place. To make this process easier, follow the step-by-step instructions below: In case the same problem is still occurring, move down to the next potential fix below.
Method 4: Using a 3rd party Alternative
If none of the potential fixes above have been effective in your particular scenario, the only thing you can do at this point is to dump the built-in backup utility and go for a 3rd party alternative. Since there are a lot of different 3rd party utilities that will help you do this, we’ve made a shortlist of the most efficient and robust solution that includes a free version:
AOMEI Backupper Standard 4EaseUS Todo BackupMacrium ReflectIperius Backup
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