Rastor9 Posted June 18, 2010 Report Share Posted June 18, 2010 (edited) Exchange 2007 Agent Client backing up to server version 7.7.325, 64 bit today starts reporting T-9: Create MAPI session failed: Exchange MAPI/CDO may not be properly installed. Scanning incomplete, error -3420 (unknown). I am also getting quite regular other messages about client being "reserved" unable to access etc. Why, if the exchange server doesn't update and doesn't reboot (I have a schedule to reboot server every two weeks) do these errors start showing up until I reboot the exchange server? Edited June 18, 2010 by Guest Quote Link to comment Share on other sites More sharing options...
Mayoff Posted June 19, 2010 Report Share Posted June 19, 2010 Have you tried reinstalling MAPI? Quote Link to comment Share on other sites More sharing options...
Rastor9 Posted June 21, 2010 Author Report Share Posted June 21, 2010 The biggest thing I would like to know, is WHY would I need to re-install MAPI? The system is running fine for about two weeks with no re-boots or errors and then "boom", Retrospect Errors. BTW: I had restarted the Retrospect client on the Exchange server and then the errors cleared. It seems that I have to reboot the Exchange server or restart Retrospect services to clear errors more frequently than I do for any MS Updates or patches. Quote Link to comment Share on other sites More sharing options...
Bill Gates Posted August 18, 2012 Report Share Posted August 18, 2012 I've also just witnessed this error, is a restart of the Exchange server the initial resolve? Quote Link to comment Share on other sites More sharing options...
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