Possible printer issue with KB5005565

Today I installed KB5005565 through WU on my desktop. Successfully installed.

Tonight my wife can't print from her laptop to the printer connected to my desktop. This has been working for years.
Printers work, can transfer files from laptop to desktop and back. All network setting unchanged.
I suspect the update I did today is the problem.
Has anyone else had this happen?

Looking at "Uninstall Updates" in WU there is for today:

• Security Update for Microsoft Windows (KB5005565)
• Servicing Stack 10.0.19041.1220

Looking at System Restore, there are 3 restore points to go back to, all dated today:

• Windows Modules Installer at 12:23
• Windows Modules Installer at 12:22
• update at 12:21

What's the best way to roll back?

I should add:

update at 12:21 is a manual restore point I created before installing the KB (old habit)

When printing from the laptop we get a printer error 0x0000011b

Going to try that today.

PRINT NIGHTMARE (common issue in the wild). Security feature blocks network printers & point-and-print.
Here is a possible explanation for this issue:

https://support.microsoft.com/en-us/...b-6d8e9a302872

Microsoft fixes Windows 10 PrintNightmare flaw with this update | ZDNet

https://docs.microsoft.com/en-us/ans...re-update.html

FYI

An Update:

I just uninstalled KB5005565 from Control Panel. (My system also reverted to KB5005033 with a date of 9/16/21. It was originally installed on 8/24/21.)

All my home networked PCs can now print to all the printers connected to my main PC.
Workaround successful.

But if you read the articles above, this "feature" was designed by MS to protect from a known exploit. So simply trying to avoid the update is just a workaround, not a fix.
We will need to find a way to network PCs and printers with this security patch in place. Sooner or Later.

Also:
I tried the fix from MS in the first article above (registry edit) and it did not work.
However, I manually created the key and DWORD, so I can't really rule out a typo.