I can't really find any information about this error... I'm on Exchange 2007. EVENT # 354472 EVENT LOG Application EVENT TYPE Warning OPCODE Info SOURCE MSExchangeIS Mailbox Store CATEGORY Views EVENT ID 1173 COMPUTERNAME SXMB200 DATE / TIME 6/20/2011 11:26:09 AM MESSAGE Error 0x6bb deleting unused restricted view from folder 1-CB4BCAB5 on database "SG01\DB01". Microsoft Exchange Information Store will try to delete the view again at the next maintenance interval.

Hi, This should be the same: http://support.microsoft.com/kb/913126 Leif

This store needs offline defragmentation

Hi, As KB mentioned: Events that reference "Error 0x6bb" can safely be ignored.Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.