Windows 7 Outlook 2010 prompting for credentials

[NatashaW_]

Hi Guys,

We have recently upgraded our users to Windows 7 x64 with Outlook 2010 32-bit. When users sign in to the VPN, and host checker has run successfully, they are able to use email. However after a few minutes they are prompted for outlook authentication. They enter their AD username and password and it works for a while, then about 15 mins later they are prompted for credentials again. This is only happening with Outlook as far as I know; their connection to applications/ intranet is fine.

Can you please suggest some troubleshooting for me?

Thanks

Natasha

[jayLaiz_]

Hi Natasha,

Are you using NC or SAM to access the exchange server via outlook?

A wireshark capture from nc adapter in case NC is used will help along with a TCP dump from SA's internal port will help

The 15 minutes looks like a timeout setting for something on the exchange.

Also are the exchange servers load balanced ?

Regards,

Jay

[NatashaW_]

Hi Jay,

Thank you for the quick reply. We are using NC and yes the exchange servers are load balanced. There are 4 of them behind the one load balancer called lrexchange.

I will try and get a wireshark done today and let you know what I find.

Thanks

Natasha

[NatashaW_ · Accepted solution]

Hi Guys,

Ok the issue turned out not to be Juniper, but the lcoal machine. I am posting the fix here in case anyone else has this problem, and needs to rule out Juniper as the culprit.

From the users local machine, Navigate to  "%userprofile%\AppData\Roaming\Microsoft\Protect"

There should be 1 or 2 folders in there, rename it, but make sure you can change it back if necessary.

Open Outlook, it will create an identical folder to the one you just renamed, it will ask for your password as usual, enter your password. After that, it stops prompting, evena fter you disconnect and reconnect from Juniper.

Hope this helps someone.

Thanks

Natasha

[jayLaiz_]

Thanks for sharing Natasha, this is great

Regards,

Jay