Barr Systems is aware of the Print Nightmare Vulnerability and has been researching ways to combat it.

If you are running the Barr HOST Communication Suite or the older Barr Enterprise Print Server software do not disable the Windows Print Spooler as it is required for the print functionality within our software.

Microsoft refers to this as CVE-2021-34527
Windows Print Spooler Remote Code Execution Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34527

The above Link takes you to information about the problem and patches to fix the problem.