Exchange Cant Mount Database ‘0x80004005’
Dec28

Exchange Cant Mount Database ‘0x80004005’

KB ID 0001632 Problem When attempting to mount an Exchange Database I got this error; Failed to mount database “{Database-Name}”. Error: An Active Manager operation failed. Error: The database action failed. Error: Operation failed with message: MapiExceptionDatabaseError: Unable to mount database. (hr=0x80004005, ec=1108) Diagnostic context: Lid: 65256 Lid: 10722 StoreEc: 0x454 Lid: 1494 —- Remote Context Beg...

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No Mail Flow On-Premises To/From Office 365
Dec24

No Mail Flow On-Premises To/From Office 365

KB ID 0001631 Problem I upgraded my On-Premises Hybrid Exchange server recently, from Exchange 2016 to Exchange 2019. I remembered to add the new server onto the Office 365 send connector, but there was no mail flow between an on premises mailbox and an office365 mailbox? Solution This happens because, (even if you are using the same certificate on the new and old servers) the certificate that is used for TLS security between your...

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Exchange Event ID 1012 & 1013
Nov18

Exchange Event ID 1012 & 1013

KB ID 0001619 Problem Seen on Exchange 2013/2016 Event ID 1012 Log Name: Application Source:  MSExchangeDiagnostics Event ID: 1012 Task Category: General Level: Error Keywords: Classic User:  N/A Description: Data loss occurred in RetentionAgent: RetentionAgent: Data loss occurred. The size of this folder E:\Program Files\Microsoft\Exchange Server\V15\Logging\Diagnostics\DailyPerformanceLogs has reached the max size allowed –...

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Exchange 2013 – Working with and Managing the OAB
Nov17

Exchange 2013 – Working with and Managing the OAB

KB ID 0000745  Problem Exchange 2013, has changed the way Offline Address Books are handled, with previous versions only one server (the first server holding the mailbox role) was responsible for generating the OAB. With 2013 however multiple servers generate the OAB, In fact every server that has a special arbitration mailbox called an organization mailbox will create a copy. This is better for fault tolerance and resilience, and you...

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Exchange Exporting Mailboxes to PST Files
Oct31

Exchange Exporting Mailboxes to PST Files

KB ID 0001360 Problem Applicable To: This procedure works on all versions of Exchange Newer than Exchange 2010 SP1 (update rollup 8). If your Exchange server is OLDER than that you will need to use the following link; Exchange 2007 / 2010 (Pre SP1)- Export Mailbox’s to PST files The following procedure exports a user mailbox to a PST file on a network share. Solution Note: Not Even ‘Exchange Organisation Administrators”...

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Hybrid Exchange: ‘Mailbox Delegation’ Missing?
Oct11

Hybrid Exchange: ‘Mailbox Delegation’ Missing?

KB ID 0001607 Problem This was asked on EE this morning, if you are on a Hybrid Exchange environment then you cannot allocate Mailbox Delegation to an Office365 mailbox; However you can add ‘Mailbox Delegation’ to a ‘local mailbox’. This is completely normal behaviour, to allocate mailbox delegation permissions to your Office 365 mailboxes, you need to use PowerShell. Managing Mailbox Delegation Permissions in...

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