09-18-2025 06:42 AM
I was trying not to get too into the weeds here, but since there is some interest, I'll explain a couple of things:
09-18-2025 07:40 AM - edited 09-18-2025 08:10 AM
Hi
Thanks for the detailed response.
However, I notice that you mention 'warnings' about the missing functionality.
I see fatal 'errors' as shown in the screendumps.
I did notice and did read CrowdStrike's long explanation. Obviously it is not meant for mortals.
I understand now that Microsoft may have restricted the functionality of software trying to use the Bonjour protocol. Because it is so powerful. Reminds me of the long standing allowing reading CHM or not allowing CHM. The jury is still out on that.
It puzzles me that Bonjour support is not just a 'it works' or 'it does not work' question.
- NI's Bonjour version ( as well as Keysight's ) got blocked on this computer.
- But Apple's original stone-age Bonjour version from 2015 works just fine. Did Microsoft silently allow it ?
For anyone wanting to try out whether they have Apple Bonjour support or not, and which devices then responds to Bonjour, one can download this little tool :
https://hobbyistsoftware.com/bonjourbrowser
Apple's Bonjour is not available as a self contained download. It is/was only available as part of an iTunes for Windows installation.
Regards
PS : I just read that 24H2 started giving warnings where 23H2 did not. So subject diagnostics in flux ..
09-18-2025 09:23 AM
> However, I notice that you mention 'warnings' about the missing functionality. I see fatal 'errors' as shown in the screendumps.
Yes, I was being a bit glib. I call them warnings because they show up in the logs but don't in general seem to have other impacts.
> I understand now that Microsoft may have restricted the functionality of software trying to use the Bonjour protocol.
Maybe, but again the errors we are talking about here aren't exclusive to Bonjour. They apply to any DLL that is loaded in an unsupported protected context.
Microsoft has also recently added multicast DNS support directly into Windows 10, so they may want to encourage developers to use the native implementation.
> But Apple's original stone-age Bonjour version from 2015 works just fine. Did Microsoft silently allow it ?
I wouldn't put it past them. iTunes was so widely available that MS may have given it special dispensation.
09-18-2025 10:42 AM - edited 09-18-2025 10:44 AM
Hi
I am out of my comfort zone of knowledge. So, as my final action I draw on Google rumor based AI :
Windows 10 has some built-in Multicast DNS (mDNS) support for specific features like discovering printers and wireless displays, but this is limited to modern APIs, not all applications, and can be unreliable due to potential firewall or configuration issues.
For full, cross-application mDNS support in Windows 10, users typically need to install a third-party service like Apple's Bonjour Print Services.