Single sign-on authentication issues.
If a Microsoft Windows Domain Controller can not reach the Certificate Revocation List (CRL) of the Awingu appliance, single sign-on authentication will fail.
On each of the Microsoft Windows servers taking care of Kerberos authentication (for instance on the domain controllers):
- Open a Windows PowerShell console.
- Execute this command:
certutil -URL "http://<awingu_internal_ip>/crl/<AWINGUDOMAINNAME>.crl"
"http": leave this, the CRL is indeed fetched through HTTP (HTTPS not required).
<awingu_internal_ip> : replace this with the IP of the Awingu appliance.
<AWINGUDOMAINNAME> : should match the Awingu domain name - always in capitals (visible under System Settings > Global > Domains).
- In the window that appears, click [Retrieve].
If there is a problem obtaining the CRL, the reason can be found in the Windows Event Viewer under Custom > Administrative Events.
Mind that Microsoft Windows Servers should be able to access port 80 on the Awingu appliance. In customer cases, often a firewall is blocking this access.