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?

I had ran into same issue with multiple users and have the fix for the issue

Step 1. uninstall the device in device manager while selecting to remove the driver
Do this until it shows the Microsoft driver shows (Microsoft Usbccid Smartcard Reader.
--- I had to remove the device twice as there are two separate drivers.

Once you have the Microsoft driver you have to set permissions on a registry entry.

HKLM:\SOFTWARE\Microsoft\Cryptography\Calais

You have to give "Local Service" full control over that Calais key
Reboot the PC and you should be good to go. I have fixed 10+ machines this way so far.

Here is a script (I didnt not write it) that does the registry fix for you

Start Powershell ISE as admin and run the following

$acl = Get-Acl HKLM:\SOFTWARE\Microsoft\Cryptography\Calais
$rule = New-Object System.Security.AccessControl.RegistryAccessRule ("local service","FullControl",@("ObjectInherit","ContainerInherit"),"None","Allow")
$acl.SetAccessRule($rule)
$acl |Set-Acl -Path HKLM:\SOFTWARE\Microsoft\Cryptography\Calais

Paul Sankey,

You are not talking to Microsoft directly here, this is a user community forum.

For problems with specific devices you need to use the Feedback Hub in windows (winkey+f). You can post a link to your feedback on this thread but unless another user finds a specific fix and replies here Microsoft wont share the fix here.

It may be fixed by a cumulative update in the future.

for ref. Windows 11, version 24H2 known issues and notifications | Microsoft Learn

Thank you. We have not. We will try this today. Thank you for informing.

Although it may have worked in the previous version of Windows 11 it may not have drivers for version 24H2. Have you asked the company if it is supported for 24H2. Are you able to roll back to 23H2?

I assume you can still sign-in but just not using the card reader.

Have you tried the diagnostic tool here: https://support.identiv.com/utilities-and-diagnostic-tools-for-smart-card-readers/