I recently was tasked with troubleshooting a malfunctioning Relying Party Trust on a customers AD FS.

Just had an issue at a customers where the Outlook 2016 would start asking for username and password when MFA was activated at AD FS (AD FS 4.

I had disabled the Content Indexing for several mailbox databases during a cross-forest Exchange migration, and needed to rebuild the indexes.

Several times during during the last year, I have encountered a weird error with ADMT (or more precisely Password Export Server Service/PES), when trying to migrate users with their passwords from one forest to another (cross-forest user migration).

Had an issue recently where the command “netdom query fsmo” failed with Access denied or Access is denied from an administrative server in our domain.

Recently I had to set default calendar permissions for all the users in our Exchange Organization.