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📆Free/Busy Across Forests: Using AvailabilityAddressSpace in Exchange
Want to enable calendar visibility between forests – but without setting up full Federation Trust? In this post, I walk through configuring Availability Address Space and calendar delegation to achieve Free/Busy sharing across Exchange forests. A useful approach for specific scenarios or limited trust relationships.
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📝Access Denied When Getting Exchange Virtual Directories – What’s Behind Error HResult -2147024891?
Can’t view Exchange virtual directories? It might not be Exchange’s fault. A deep dive into how DCOM permissions and missing admin rights can break things silently.
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✍️Why Teams Meetings Fail for Delegates in Exchange Hybrid – A Hidden Message Mystery
Delegates in Exchange Hybrid may seem properly configured – but Teams doesn’t think so. Let’s find out how Outlook and EWS see things differently.
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✍️Reconfiguring Exchange Hybrid with a New Tenant – Real-World Pitfalls
Rebuilding hybrid config with a new tenant? It’s not just rerunning HCW. Here’s what broke in real life – and how I fixed it.
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📌How I Used EWS and PowerShell to Fix Broken Meetings
Learn how to use EWS and PowerShell to explore and adjust calendar items – a practical toolset for Exchange admins facing time zone issues or custom processing needs.
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📝Duplicate Emails and Shadow Redundancy in Exchange – A Real-World Case
Exchange Shadow Redundancy isn’t just about reliability -sometimes it misfires. Here’s how duplicate message delivery happened in the real world, and how we diagnosed it.
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📝How to Cancel or Remove an Audit Log Export Request in Exchange Server
Accidentally exported an audit log to the wrong recipient in Exchange? Here’s how to find and clean up the request – even when it’s buried in the system mailbox.
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📝Fixing OWA Login Failures After Mailbox Migration from Exchange Online to On-Prem (SDServerErr;System.ArgumentException)
After migrating a mailbox from Exchange Online back to on-prem, OWA login may fail with SDServerErr and System.ArgumentException. Here’s how to fix it using MFCMAPI – and how to prevent it with PowerShell.
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📝When MonitoringThreshold Doesn’t Mean What You Think – Exchange MA Explained
Setting a MonitoringThreshold value doesn’t always do what you expect. Here’s a look at real examples where Managed Availability customizations don’t work as intended.
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📝Exchange OWA, Outlook, and PowerShell Broken After Reboot – IIS Error 500.19 Explained
After rebooting Exchange servers, OWA, Outlook, and PowerShell stopped working with IIS error 500.19. The root cause? WSUS leftovers. Here’s how we tracked it down and fixed it.
EWS Free Area 