Unpredictable random errors during Exchange archiving
Posted by Daniel Weuthen on 28 Nov 2012 19:41

Problem: An existing archiving task, which was executed successfully before, fails with the following error message in the MailStore Server debug log:

 Object Reference not set to an instance of an object

Solution: In most cases this error occurs when anti-virus software has moved an email to a quarantine folder while it was accessed by MailStore. The anti-virus software settings should be checked.

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