Is there a way to prevent Outlook 2010 checking for new mail on Exchange?
Yes, as Jim already answered. Off-line mode.
The problem is, we no longer know the password for the account, but we need
to able to keep the historical mail in the account.
Can't you reset the password? Outlook is mostly used in combination with corporations and those have an IT department. That would be the cleanest solution.
However because we have an expired password Outlook prompts for the
password every 5 minutes and we have to click cancel.
Is the old account on an exchange server?
- If it is than apparently you can not change that. Source.
- If it is on an pop3 account then you can set how often outlook checks for new mail. An ugle hack would be to set that time to a large value.
It's very annoying. What options do we have for retaining all the email, without getting the password prompt?
The information you see right now is probably in a cached file (.ost).
These are caches. Main information is on exchange (and requires the password!).
If the information is important then export it as soon as possible. Either by remailing it. Or try to archieve it to a .pst file.
If I delete the account, I'm worried it might delete the associated PSTs
or other data
It will not by default delete asociate pst. It will simply no longer reference them. And you can always simply shut down outlook and make a backup of those pst's.
(Backups are ALWAYS a good idea).
- Create a new PST.
- Drag mail from the 'broken' account to it.
- Close outlook and copy the PST.
- Verify that it works on another computer.