This article will focus on why the Invalid MS-DOS function error occurs on your PC, and suggest working solutions to fix the issue. So, if you are one of the users facing this error, continue reading through to see which fix will work for your case.

How Do I Fix the Invalid MS-DOS Function Error on Windows 11/10?

If you are encountering the Invalid MS-DOS function error when copying, deleting, or moving a file from one drive to another, click Try Again on the error message, or restart your computer. Such simple workarounds can resolve the problem. If that doesn’t work, try the following solutions to successfully fix the issue.

1. Rename the file name

2. Format the destination drive in NTFS format

3. Repair system files using SFC & DISM

4. Run the CHKDSK command

5. Optimize and defragment your drive

6. Tweak Windows Registry keys

Warning: Making any changes in the Windows Registry can lead to unresolvable issues for your computer. We recommend creating a system restore point and then proceeding with caution. We cannot guarantee that issues that result in wrong registry edits can be resolved. That’s it for now. We hope you resolved the Invalid MS-DOS function error.

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