Single sign-on authentication issues.
If a Microsoft Windows Domain Controller can not reach the Certificate Revocation List (CRL) of the Parallels Secure Workspace 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://<workspace_internal_ip>/crl/<WORKSPACEDOMAINNAME>.crl"
"http": leave this, the CRL is indeed fetched through HTTP (HTTPS not required).
<workspace_internal_ip> : replace this with the IP of the Parallels Secure Workspace appliance.
<WORKSPACEDOMAINNAME> : should match the Workspace 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.
Microsoft Windows Servers should be able to access port 80 on the Parallels Secure Workspace appliance. In customer cases, often a firewall is blocking this access.
It's worth noting that Microsoft Windows Server caches CRLs. To clear this cache:
Execute these commands on the Kerberos Domain Controllers:
certutil -urlcache * delete
certutil -setreg chain\ChainCacheResyncFiletime @now
net stop certsvc && net start certsvc