What Is Regid.1991-06.Com.Microsoft and Can You Delete It?

By Timothy Tibbetts

on 06/15/2023

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Recently while cleaning house on our Windows 10 computer, we found a folder in ProgramData called regid.1991-06.com. Naturally, we wanted to delete it. But, what is it and can it be deleted?

There's a good bit of vague information about this folder out there, and it appears to be related to Windows Updates. The folder is usually small, as little as 4KB, so there's not much to gain by deleting the regid.1991-06.com folder.

But, this is MajorGeeks, so we deleted it. The folder was restored after a reboot confirming there is no point in deleting this folder.

We've posted many guides on fixing broken Windows Updates, and many of the solutions require deleting Windows Update files. This is because if you remove files for an upcoming Windows Update, Windows will redownload the next time Windows Updates runs. Of course, we'd create a System Restore point to be safe.

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