Error when installing Entra Connect Sync: Service ADSync was not found on computer ‘.’ #
Written 07/10/25
PROMPT: You are attempting to (re)install ADSync onto a Windows server and you run into the error message: Service ADSync was not found on computer ‘.’
Resources: #
Steps: #
- On the offending server, open Registry Editor.
- Navigate to
HKLM\SOFTWARE\Classes\Installer\Products
- Start from the first registry key at the top and use the arrow keys to go through each key. Inside each key there will be a string value named ProductName, with a value of the program name. Once you find the key containing ADSync, you can delete the entire key.
- You should now be able to install ADSync without any trouble.
- Note that this is supposedly indicative of other issues with the OS.