Fixing permissions issue, appears as "Unknown package" error at end of setup run

[alexgg2@gmx.com]

I've read through the Cygwin FAQ, googled around, and I wasn't able to find the
appropriate answer, which is why I'm sending it to this mailing list.
Apologies if this is not the correct place.

At the end of setup-x86_64.exe run, I get a popup about an Unknown package error.
As instructed, I looked at /var/log/setup.log.full and saw:

  2021/11/09 12:39:04 running: C:\cygwin64\bin\bash.exe --norc --noprofile "/etc/postinstall/inetutils-server.sh"
  *** Warning: The permissions on the directory /var are not correct.
  *** Warning: They must match the regexp d..x..x..[xt]
  *** ERROR: Problem with /var directory. Exiting.
  2021/11/09 12:39:09 abnormal exit: exit code=1

Is there a way to make cygwin re-set all the cygwin system directories and files
permissions to their default values?


Thanks in advance.
/ALG