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chat error federation IM Microsoft Teams sip Teams

We can’t set up the conversation Teams Chat Error

You want to chat from Teams to a person outside your company who is also using Teams and you get “We can’t set up the conversation because your organisations are not set up to talk to each other”. This is an admin setting, so if you are not the Teams admin you need to speak […]

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EOP error exchange exchange online Exchange Online Protection spam

550 5.1.8 Access denied, bad outbound sender AS(42003)

“Your message couldn’t be delivered because you weren’t recognized as a valid sender. The most common reason for this is that your email address is suspected of sending spam and it’s no longer allowed to send email. Contact your email admin for assistance.” This is an error you get when your anti-spam “outbound” policy restricts […]

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DNS error Exchange Server

451 4.7.0 Temporary server error. Please try again later. PRX2

There are a few articles online about this error, but none were correct for the scenario i found a clients network in. Not that I think the specifics matter, but this was Exchange Server 2016, Windows Domain Controllers running 2012 R2 and Exchange Hybrid. All the mailboxes had already moved to the cloud and the […]

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error exchange exchange online Exchange Server migration move

CannotEnterFinalizationTransientException On Exchange Move Request

Did not find a lot on the internet on this particular error, so I guess it does not happen very often, but in my case it delayed to move of the mailbox in question by a week or so until I could resolve it. When a mailbox is moving to a different Exchange organization (cross-forest […]

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2010 2013 2016 active directory ADDS error Exchange Server

Exchange Server Object ID Error With Windows Server 2016 Domain Controllers

Saw this error the other day: When you open Exchange Control Panel and view the Mailbox Delegation tab of any user account you get the following: The object <name> has been corrupted, and it’s in an inconsistent state. The following validation errors happened: The access control entry defines the ObjectType ‘9b026da6-0d3c-465c-8bee-5199d7165cba’ that can’t be resolved.. […]

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error ip ipv4 networking virtualisation

Slow Virtualization Networking

I had a complaint from a customer today that there new virtual server with lots of resources was too slow on copying files and could I take a look. So I did! The virtual server was connected to a 1GB switch via two different network cables. One was configured in the Hyper-V virtualization software as […]

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2003 2007 active directory error exchange kerberos virtual pc virtual server

ERROR_REPLICA_SYNC_FAILED_THE TARGET PRINCIPAL NAME IS INCORRECT

This rather imposing message is found if you try to force replication between to Active Directory Domain Controllers when one of the controllers machine account password is out of sync with the password as stored on the other domain controller. I have seen this a number of times on Virtual PC or Virtual Server Active […]