Scenario:
A company implements XenDesktop. Windows XP users are unable to launch their Windows 8
virtual desktops. They receive the following error:
Error: Please contact your help desk with the following information:
Cannot validate SSL certificate.
What is a possible cause of this error?
A.
Citrix Receiver needs to be updated.
B.
The SSL certificate on the NetScaler has expired.
C.
The server certificate is NOT installed on the computer.
D.
Citrix Receiver is unable to verify the server certificate revocation.
A – is not relevant;
B – could be a potential cause however I believe the error message will be different, not entirely sure though. Keyword here is “VALIDATE”…
C – the “server” certificate.. it they would’ve said the root certificate or CA certificate I would’ve maybe considered it (presuming they are using an internal CA), but the server certificate itself doesn’t have to be installed on the users’ machines;
D – found an old article (https://docs.citrix.com/en-us/receiver/windows/4-2/ica-securing-connections-v2/ica-cert-revocation-list-enable-v2.html), not sure if it is still the case, but apparently CRL with Receiver is NOT enabled by default. If we presume that CRL is enabled, then this answer would make the most sense to me because of the “cannot validate” keyword. Clearly some validation checks were failing if you’re seeing this.
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