Epicenter asks you to authenticate during an update
Posted by Jim Beveridge on 27 January 2016 08:50 PM

(Applies to: Epicenter Server)

Problem: When attempting to send an update, the process stops partway through and puts up an authentication window. It will not accept even the correct username and password, so you are forced to click on Cancel button. Then you see an error like this:

01/26/16 18:20:22 [Global Address List] Unable to open the mailbox for Xxx Yyyyy <xyz@example.com>. Microsoft Exchange Information Store reported that, "Microsoft Exchange is not available. Either there are network problems or the Exchange server is down for maintenance." Reason: MAPI_E_FAILONEPROVIDER. Support Info: 0x80040115 / MAPI_E_NETWORK_ERROR / 1318

Cause: Mixed forest of Exchange Server 2007 with later versions of Exchange. Updates typically stop when Epicenter tries to send to a user on Exchange Server 2007 because Exchange 2007 uses Basic Authentication instead of NTLM Authentication for Exchange 2013 mailboxes.

Solution: You must run separate copies of Epicenter Server, one for Exchange 2007 and one for Exchange 2013. These must be run on separate virtual machines. There is no additional charge to do this. Each copy of Epicenter Server must use a static distribution list for users on that particular Exchange Server.


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