Windows 24H2 - Can't install Hauppage Drivers

[Lao Pan]

This morning I updated the HTPC to Windows 24H2 from the latest ISO (in-place install)
All appeared OK until I tried to watch TV - both the Hauppage QuadHD PCIE card and the PCTV USB dongle were not recognized.
First I tried reinstalling the drivers using the WinTV v10 installer which complained that  C:\WINDOWS\System32\drivers/BdaSup.sys is corrupted - and on continuing, couldn't find the tv card.
Next I tried copying the said file from the Windows OLD folder - but it gets overwritten each reboot.
Tried System file checker which couldn't repair all the corrupt files - then Repaired using DSIM, but still no luck.
 
Finally, I rolled back to 23H2 just before the wife came down wanting to watch TV. Thankfully all went back to normal.

Is there anything I have forgotten to do - it's a long time since the last full upgrade on the HTPC?
Or is this a known problem with a workaround? 
Or no workaround - which will mean staying on 23H2?

Any thoughts or advice gratefully received.

I don't think logs would have been any use.

[sub]

You're probably best to try asking Hauppauge about that. I'm sure they'll have a fix.

[Lao Pan]

Thanks Sub

Hauppauge were lower down on my "Who you gona call list" 

Sent them an e-mail just after 5pm on Friday -17 mins later had a reply. 

And for anyone having the same problem:
The answer is - Remove the Hauppauge Win Quad HD PCIE card (what a pain) and PCTC stick - I also disabled the NPVR service, just in case.
Then do the in-place install from Windows 1124H2 ISO, shutdown and replace the Tuners, which were recognised on boot.

For some reason the BDA drivers were being corrupted with the Tuners installed.

I think the last time I had to do similar, was upgrading from XP to Vista in GBPVR days long ago.

[mvallevand]

Because of this thread with a new version of NextPVR coming about shortly, I decided to force the 24H2 update with Window 11 Assistant and my WinTV USB and Silicondust tuners are working fine with BDA

Hopefully the issue here is isolated but at least it is good to know there is a workaround albeit not ideal.

Martin

[Lao Pan]

I heard from Hauppauge that it is happening in some cases, but not all the time. I believe they have informed MS.