On Thu, Jun 2, 2022 at 6:44 AM Brent Epp wrote: In the [Security] tab for these files or directories, under "Group or > user names", it lists the owner as "Account Unknown(S-...)". In some > cases, these files are completely inaccessible and I can't even take > ownership or change the permissions. I have to either restore them from > a backup or boot to a Linux environment to access them. >
Windows displays "Account Unknown" (with a SID) in the ACL when it can't resolve the SID reference. There can be a number of reasons for this. One common reason is that the SID belongs to a domain account and the domain is not accessible. Another is that the SID belongs to a local account on a different computer (e.g., a removable disk is moved between computers and local accounts are in the ACL). Well-known SIDs (e.g., S-1-5-32-544 for the local Administrators group, etc.) should resolve from any computer. Bill -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
