We upgraded to 24H2 and now our SCR3310 card reader is no longer recognized and we now cannot log in with our CAC card. Is there a fix?

Yes we can still sign in, to the computer but it no longer detects the card reader. We can do everything as normal but once we get to where we need to select a certificate from the CAC card it can't see the card reader to read the certificates so we can pick the certificate we need to access the website we are navigating to. We tried it on another conputer that has 24H2 and it works, now we are suspicious there may be a group policy setting or registry setting. When we installed the updates yesterday that put us on 24H2 after the final boot was a message saying it can load the S3XXx64 driver error, it said it couldn't load the driver and the more info button referred to memory core or something. Research showed this was the driver for the card reader so we uninstalled the card reader driver and reinstalled it from the mfgr website and we just can't get it to work since as per above. We are wondering if 24H2 did something to that registry on that computer. We can edit the registry and we can change group policy as we are administrators. But what to change if anything?

We upgraded to 24H2 and now our SCR3310 card reader is no longer recognized and we now cannot log in with our CAC card. Is there a fix?

We downloaded latest drivers, removed and reinstalled the driver, tried different USB ports. It shows up as working properly in Device Mgr but that's it. The light won't come on, it ignores the reader. Help.

* Changed to a question

I have fixed this issue in the dumbest way possible.

I went to Device Manager, then under Smart Card readers, I right-clicked the card reader, then uninstalled the driver (uninstall device).

Rebooted my computer. Works. I hate it.

fake edit: my guess is Windows thinks they're the world's savior and are doing the smart card reader "in-house" and any middleware even made by the vendor is seen as a foreign process getting in the way of glorious MS's in-house process for smart card reading and its delivery.

I work for DOE and we tried all sorts of things with no resolution. We did confirm that it has something to do with the latest update of 24H2. The fix will require a Microsoft Windows patch.

-Run Regedit.exe:

• Go to the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\Calais

-Check the permissions for LOCAL SERVICE (if not there, add it). Make it "Full Control":

• Right-click on the key (Calais) and select "Permissions..." from the pop-up menu

• Click on LOCAL SERVICE to select it

• Allow "Full Control"

That's worked on my customers.

Don't miss to reboot computer to have change correctly updated.

This confirm that upgrade had an issue and windows do nothing about it....

Richard, did you ever figure out the problem? I am experiencing the same issue. If you fixed it, would you mind letting me know how you did it? Thanks!