Hello.. I've just installed todays supplemental update on two Macs. The computername, hostname and localhostname have been changed to iMac and MacBook Pro, instead of their designated names. I've also lost permissions granted through Active Directory group membership. Any other enterprise users getting the same?
iMac with Retina 5K display, macOS 10.15
Also had same issue. Just today (27 May) installed the Catalina 10.15.5 update and now my hostname and localhostname no longer has unique computer name, changed name to iMac. I am unable to make changes to the computer name (ghosted out). Have 2 computer labs with Retina 5K 27-inch iMac 2017. Apparently, this issue has been on-going on since Apr 9 and still no fix. Apple please help!
I have seen this on 3 machines as well.
Yes, this is an issue for sure. I wrote about it here.
https://mrmacintosh.com/10-15-4-supplemental-update-resets-computername-hostname-to-default/
looks like this is still an issue
I have machines updating and reverting back to the Default Hostname.
I just had this happen on the current 10.15.5 update (updating from 10.15.4) on 41 computers, out of about 45 that did the update. Not happy about this...
Computer/hostname change after Catalina 10.15.4 supplemental update
