Windows 10: Printing in UWP apps fails with security patch KB5008212

Since patch KB5008212 was installed, printing has stopped working in the UWP app I'm developing. Also the official microsoft samples to print doesn't work either https://github.com/microsoft/windows-universal-samples/tree/main/Samples/Printing. Uninstalling the patch got it working again until Windows automatically reinstalled it.I use appPOS58PORTABLE+ printer https://www.approxtpv.es/es/impresoras-58mm/124-apppos58portable.html connected by Bluetooth, but it also fails with other portable printers of the same type.I will describe how the error occurs and the solutions that I have tried a

:)

 

Can't Print in Edge and UWP Apps


I can't seem to print in Edge or other UWP apps but I can in normal software. This includes photo viewer.

 

Printing from UWP apps no longer works after upgrading to Windows 10 Creators Update

The drivers are not the issue. As I said in the original post, I can't print from the PDF or XPS printers either, and those are not hardware printers that need drivers, they are software printers that simply print to .pdf and .oxps files. Indeed, neither
the PDF nor XPS printers show up in the Device Manager that your link says to use to update drivers.

Also, I can print fine from desktop apps, using both the software printers (PDF and XPS) and my hardware printer (an HP printer). It's only UWP apps that I cannot print from.

So updating drivers is not the issue here.

But I think I have a related problem. "Share" also no longer works on my computer for UWP apps. For example, if I go to Edge and click share, and choose, for example ,the Mail app, the Mail app flashes for a split second, then goes away, so the share operation
fails. It's similar to what I see when doing "Print" from a UWP app, whereby the Print panel flashes for a split second (if at all), then goes away.

With the original Windows 10 I had neither of these problems regarding print and share from UWP apps; only after upgrading to Windows 10 Anniversary Edition did I begin having these problems.

 

Printing from UWP apps no longer works after upgrading to Windows 10 Creators Update

MSDN is for developers.

I'm not asking about how to get printing to work in a UWP app that I am developing. I'm saying I cannot print from UWP apps, period. Such as Word Mobile. Such as Edge. Such as any UWP app. I'm saying that I only began having this problem after upgrading
to Windows 10 Creator version. And, as I later posted above, I also cannot "share" from any UWP app since upgrading to Win10 Creators Edition.

MSDN isn't going to help me or others that have this problem.