Lost users on change of uid/gid
49918
How to mount HFS+ drive and ignore permissions
154395
How do I migrate users passwords?
90170
How do admins maintain user accounts across hundreds of linux servers?
33844
How do real and effective user IDs work?
58509
Error message id: cannot find name for group ID after logging in
86402
systemctl --user not available for www-data user
16652
User cards are no longer showing reputation or badges across the network
26553
Further anonymize deleted accounts by changing the username in close/delete notices
155175
How do I delete a board when the admin is no longer part of the group?
77610
how to reset a lost admin password?
154485
Update user info in AD
89447
Rep cap and user removed
64196
Change user associated with Google Drive account (OSX) when old account does not exist
361
Impact of changing instances' passwords
41233
"OpenID 2.0 for Google Accounts is going away"; will this affect Stack Exchange?
99759
Deleted users still leave some trace behind
131960
Is it safe to rename special user folders?