Microsoft Endpoint Configuration Manager Setup Wizard has detected existing primary site

Ric L 6 Reputation points

Trying to install SCCM on Win server 2019, and during installation the Microsoft Endpoint Configuration Manager Setup Wizard has detected an existing primary site. This server used to have SCCM running but decided to uninstall the Configuration Manager site and all the associated files.

Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
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  1. KurtBMayer 836 Reputation points

    @Ric L

    You can look for the Site Recovery Wizard interface either on the start menu or on the ISO. It can try to repair the site or uninstall the old site. See this article for reference:

    How to Recover Restore SCCM Primary Site Server Database Part 1 ConfigMgr Endpoint Manager

    Otherwise, there is probably some leftover information in the registry and/or Program Files folder from the old install. Can try checking these locations (or similar):

    SCCM File and Registry Locations

    As a last resort, install on a different server or reinstall the OS to clear it. The only other place SCCM stores information not on its local server or in its database is in the AD container for "System Management."

    Please upvote and accept this thread as answered if it's helpful, thanks!

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