This article covers the common causes that the auto-enrollment prompt and tray icon may not show for a user. If you are attempting to set up auto-enrollment, see the Smart Card Deployment Guide.
GPO Is Not Applying
For various reasons, the GPO you have created may not actually be applying to the workstation. To verify this, you can use the Registry Editor.
- Press the Windows+R keys in combination on your keyboard to bring up the Run prompt. Type regedit and press OK.
- In the tree-view on the left, navigate to HKLM\Software\Policies\Microsoft\Cryptography\AutoEnrollment and verify the value of AEPolicy is set to 0x00000007.
- In the tree-view on the left, navigate to HKCU\Software\Policies\Microsoft\Cryptography\AutoEnrollment and verify the value of AEPolicy is set to 0x00000007.
If either of these values are incorrect, the GPO you created is not applying correctly. You will want to use standard GPO troubleshooting tools such as gpupdate /force and gpresult /h to troubleshoot this further.
Note: for more information about these registry values, you can read a Microsoft blog post about them here.
Certificate Template Permissions
If the user, or a group the user is a member of, does not have the correct permissions on the certificate template the prompt will not appear. On the certificate template, verify that the permissions for your user (or group) on the security tab of the template properties are as below.
- Read: Allow
- Enroll: Allow
- Autoenroll: Allow
User Already Has a Certificate in the Certificate Store
If the user already has a certificate in the Personal certificate store, it will assume auto-enrollment has already taken place and will not prompt. To verify this, you can use the certificates MMC.
- Press the Windows+R keys in combination on your keyboard to bring up the Run prompt. Type mmc and press OK.
- Note: If prompted by UAC to run MMC as administrator, select Yes.
- Click File > Add/Remove Snap-in...
- Select Certificates from the Available Snap-ins, press Add >.
- Ensure My user account is selected and press Finish.
- Press OK.
- In the tree view on the left hand, navigate to Certificates - Current User\Personal\Certificates.
- In the main view, check to see if there are any certificates issued to your user. If so, delete them and then next time you log in, the auto-enrollment prompt should appear.