Exchange Online App-Only Authentication Error AADSTS70011 Invalid Scope
As more people are starting to use the Exchange Online V2 module (yay!), there are some new and different issues appearing.
In this case, the command to connect to the …
Messaging
Does Exchange Setup Automatically Run PrepareSchema?
The question "Does Exchange setup automatically run /PrepareSchema?" was something that came up many times in the recent Hafnium remediation activities. This was due to many customers not updating Exchange …
TenantOrganizationConfig Required When Preparing Active Directory
When running /PrepareSchema in an Exchange organisation with an existing Exchange Hybrid deployment you may run into an error which states:
"A hybrid deployment with Office 365 has been detected. …
Unable to Run Exchange Setup–Pending Reboot From a Previous Installation
When installing Exchange updates, I place the server into maintenance mode and restart it prior to installing the actual Exchange update. This is due to have being burned many times …
Exchange Managed Availability State Unknown
The below is one of the cases where the "Zen of Exchange Management" is what fixes the issue. I've been know to say that sometimes you just need to wait …
Exchange 2016 CU20 PrepareAD Required
This is a quick heads up for those who may be deploying Exchange 2016 in the near future. If you are currently on Exchange 2016 CU19 there are no AD …
Should I Overwrite The Default Exchange SMTP Certificate?
When adding a TLS certificate on an Exchange server, the inevitable prompt will appear to enquire if you wish to overwrite the default SMTP certificate binding. While the UI in …
Can You Fix This? Exchange 2013 Setup – Server-Gui-Mgmt-Infra Isn't Installed
There was a request to fix the issue below when installing Exchange 2013 CU23. When running setup the error received was "Installing Exchange Error – Server-Gui-Mgmt-Infra isn't installed".
If …
April 2021 Exchange Security Updates
Today is patch Tuesday for April 2021 and there are critical Exchange server security updates in the release. You can review all of the affected products on the MSRC blog…
Exchange & TCP/IP Port Range
The below is an interesting result after installing Exchange. The act of installing Exchange will change how TCP/IP operates on the server with respect to ephemeral connections.
This may manifest …