Upgrade Exchange 2013 – Couldn’t resolve the user or group
Today, I run the maintenance to upgrade the Exchange Server 2013 from CU 20 to CU 23. However, I got the error on step 14 that says “Microsoft.Exchange.Data.Common.LocalizedException: Couldn’t resolve the user or group”. I checked and confirmed the user/group is already in Active Directory. Below is the full detail of the error. As you … Read more