CRM 4 Outlook Client – Automagically Moving Url to Trusted Sites

Gayan Perera, 12 October 2012

We recently implemented IFD for a large customer, due to various constraints and issues with the outlook connector we decided to leave the existing CRM 4 connector on the client machines and then push the url changes through GPO directly into the registry.

However when we did this the CRM 4 outlook client automagically moved the url from intranet sites to trusted sites! This caused a windows authentication popup, after investigating the issue we found two registry keys that can be toggled to turn this behaviour off.

If you’ve come across the same issue the way to fix it is to:

1. Open the registry editor (start > run > regedt32)
2. Navigate to HKEY_CURRENT_USER\Software\Microsoft\MSCRMClient
3. Set TrustedTargetUrl and UnblockedTargetUrl to 0