Windows 11 update 24H2 appears to break Saitek drivers. I had a message that the driver saih0c2d.sys was being blocked for security reasons. This driver is used by the Logitech throttle quadrant.
The fix is to disable Core Isolation security as outlined in this MS support posting, A driver can’t load on this device - Microsoft Support
I haven’t tried Logitech support yet, but this hardware is very old, and they were not the original developers.
Isnt 24H2 supposed to have a whole load of problems for MSFS and other games ?
My system has been bugging me to install the update but I have refrained so far.
Since Logitech still markets these devices, perhaps they’ll update the driver for the panels. I think the latest one is from 2020. Incidently, the pedals, throttles yoke are not affected and work fine. There is another thread on here concerning this issue, perhaps look that up if you continue to have issues.
It’s also the update that removes Windows Mixed Reality. Which will break the HP Reverb G2.
Otherwise, it seems fine for me.
I submitted a ticket, although getting past their AI support bot was painful.
Hi , i use the saitek driver 64 Bit and this works fine with 24H2.
German Saitek Site.
https://support.logi.com/hc/de/articles/360024848693--Downloads-Flugzeug-Schubregler
Greetings
Frank
Thank you, install restart and fly. It worked a treat 
With that driver were you able to keep memory integrity turned on?
Yes, well I think so.
I tried your link because I didn’t want to turn the security setting off unless I absolutely had to. I downloaded and installed the 64 bit driver and restarted my computer, when I launched FS2020 it detected the quadrant again and I was able to complete a few flights with no further issues.
It may be worth noting that I had forgotten to turn it on BEFORE starting FS2020, indeed the flight was loading when I turned the quadrant and NXT on, and only the quadrant failed, my NXT didn’t have a problem.
I just got this error / warning after installing the usual Thursday updates from Microsoft. The driver also worked for me. The Topic Author may wish to mark that link as the solution. 
Trying to install the recommended driver. The post says 64-bit, but the German site says 32-bit and when I attempt to install it chides me for attempting to install a 32-bit driver on a 64-bit Windows 11. Any advice for 64-bit Windows 11 users?
English version.
Downloads - Flight Throttle Quadrant – Logitech Support + Download
Select 64bit
and click download now
Thanks TenPatrol. I went back to the site and selected Windows 11 and the only option listed is 32-bit. After thinking I must be crazy as your screenshot clearly shows a selection - clearly I must be blind - I thought: your screenshot does not show the OS version selection, maybe it’s under Windows 10. And there it was. So you can’t currently find this under Windows 11, only under Windows 10 selection. But I wouldn’t have even thought to look without your post - so thanks!
Downlaod and install 64bit version for Windows 10.
Odd as there is no 32-bit version of Windows 11.
I haven’t switched yet and still have core isolation turned off.
Had this issue today, but ended up being the driver for my Saitek Rudder pedals as they where no longer working (device managers showed the driver in error as well). Took some digging to find drivers for them. But finally located Win10 64 bit ones dated 2018. Which seemed to do the trick.
