Unable to find OST file after switching off Cached exchange mode

[CyBeRkId2002]

After struggling along with online Exchange mode for long enough we have made the switch to cached and are finding the whole experience far snappier. We do have a strange issue in that a small handful of staff are getting an error that it can't find the OST file (or something similar) and configuration has failed.

 

For info:

 

• We are using Roaming Profiles (yes, yes - I know... these are going to be removed as soon as Outlook bring in the roaming signature feature in the next few days / weeks / months)
  
• It isn't every member of staff, and it isn't on every computer. Strangely seems to be computers they use less frequently
  
• We do not, at present, redirect the OST so should be in the local profile. I understand this will be regenerated on start-up for those who do roam but honestly this is such few people it SHOULD be a non-issue.
  
• The OST it is looking for is named based on the old domain name, not the one we have been using for the past 12 months or so
  
• 
  

 

All of the above makes me think this is stored in a regkey somewhere in the roaming profile. Has anyone seen this before and, if so, do you know what the key is so I can load up the registry and remove it for these problematic users?