I’m currently troubleshooting some Outlook add-in issues, and I needed to disable all Outlook add-ins except for a select few that I needed to stay enabled. Here’s a cut-down version of how I achieved it.
Outlook
List all Outlook Add-Ins Using PowerShell
Today, whilst troubleshooting an Outlook add-in issue, I was asked by one of the vendors to provide a list of Outlook add-ins. Rather than take a screenshot, I wanted to do this in PowerShell as then I could invoke it remotely on the machine in question without disturbing the user.
Outlook/Exchange NDR: “Delivery has failed to these recipients or groups” for user with Send-As permissions
Had a user today that was receiving an NDR when trying to send as another user. This was strange as this user has always had full mailbox access and send-as permissions to the mailbox in question, so the NDR was unexpected.
It turned out to be an issue with cached address entries when typing the sender’s address into the “From” field in Outlook. I removed all of the relevant entries and then resolved the sender from the address book, and the email went through without any issues.
One for the memory banks…
User Error 