Profile cover photo
Profile photo
Zoltan Erszenyi
26 followers
26 followers
About
Zoltan's posts

Post has attachment
Where Has My Licence Gone?!
"Who removed my licence?" "Probably Microsoft. Your 30-day grace period has likely expired..." Hi All, Recently one of my clients reported that some users lost their O365 licence. They were working yesterday and no longer could log on today - the licence wa...

Post has attachment
Email and UPN do not belong to the same namespace
Hi There, Just recently I helped out in a case where hybrid Exchange users with the mailbox in the cloud were failing to retrieve autodiscover configuration data. It was an environment with multiple federated domains, and mailboxes split between on-premise ...

Post has attachment
The Curious Case of GroupPolicy Error 1053
Recently I was involved in a case where a user was losing his Taskbar icons and email signatures. He had all possible folders redirected to a remote network share over a WAN link. The icons are stored in the AppData (Roaming) structure and I wanted to bring...

Post has attachment
Potential Security Hole In RMS with File Classification Infrastructure
Brace yourself for a long post on what to expect when embarking on protecting files with RMS and Windows Server File Classification Infrastructure (FCI). It isn't pretty, no matter how I look at it. The Short Story A client had a need to protect files and i...

Post has attachment
Integration Is Not That Great Between Batch And Individual Mailbox Migration Tools
I was migrating a small batch of some 30 mailboxes from on-premise to Exchange Online in a hybrid configuration. I chose the option to suspend the migration, then complete it manually later. While most mailboxes reached the AutoSuspended status, some have n...

Post has attachment
Removing Exchange 2010? Disable Performance Logs & Alerts!
In a recent upgrade (a.k.a. "transition") from Exchange 2010 to Exchange 2016 project I got to the point where I had to uninstall Exchange 2010. To my surprise it failed to uninstall, despite the fact that all services that I was aware of, such as antivirus...

Post has attachment
StalledDueToTarget_MdbCapacityExceeded
Intro The Mailbox Migration Performance Analysis  blog posted by the  Exchange team  back in 2014 provides a great deal of details about monitoring and measuring migration performance using the various states and the time a job spent in each state. What it ...

Post has attachment
Are All Your Exchange Services Running?
How any Exchange troubleshooting should start: Scratch head. Confirm all Exchange server services are running. Plot out the next steps. I have recently been involved in troubleshooting an issue where resource automatic booking stopped working. Additionally ...

Post has attachment
Don't Forget to Bounce the Autodiscover Application Pool
This has been widely documented but I feel the need to share my experience. The Scenario Mailboxes are moved from Exchange 2010 to Exchange 2013 or 2016. Users are prompted to restart Outlook. Outlook fails to reconfigure the profile and it doesn't connect ...

Post has attachment
Think Load Balancing Before You Ditch Your Exchange DAG Administrative Access Point
With Exchange 2013 SP1, Microsoft introduced an alternative to the traditional failover cluster on which DAGs are based: no virtual IP, no Cluster Name Object, no worries. For details see https://technet.microsoft.com/en-AU/library/dd979799(v=exchg.150).asp...
Wait while more posts are being loaded