Users unable to reset AD passwords through CAG

I have a client that has a Citrix Access Gateway (5.0.1) installed. When users passwords expire in AD they are prompted t0 reset them:
change expired passwordWhen the user goes through the motions they get:
error
So I thought, oh yea, CAG isnt talking to DC on port 636 and using standard unsecure LDAP on 389. I was wrong:
cag ldap
So I looked at the CERTS and it seems like all the relevant certs are there:
certs
If I go into that users account and set it to never expire, they can log on fine so I know that secure LDAP is working over 636.

Im at a complete loss.

Any ideas?

Thanks
Mark
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Mark GalvinManaging Director / Principal ConsultantAsked:
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Mark GalvinConnect With a Mentor Managing Director / Principal ConsultantAuthor Commented:
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McKnifeCommented:
Hi.

Servers with Network level authentication enabled pose this problem even to native Microsoft RDP clients. Please disable nla for a test.
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Making Bulk Changes to Active Directory

Watch this video to see how easy it is to make mass changes to Active Directory from an external text file without using complicated scripts.

 
Mark GalvinManaging Director / Principal ConsultantAuthor Commented:
Hi

Tried that and same result. NLA not enabled:
rdp
If I disable that tick box using the reg method, changing the below to 0, same result:
reg
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McKnifeCommented:
Ok, no further idea here.
You should contact Citrix support if possible.
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Mark GalvinManaging Director / Principal ConsultantAuthor Commented:
Tried Citrix support and they no longer support our CAG. Their recommendation was to upgrade to a Netscaller. Client doesnt have £8K to spend on that just to allow users to reset their AD passwords so really need to find a way to allow this.

;-(
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Mark GalvinManaging Director / Principal ConsultantAuthor Commented:
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