This morning while I was sipping my tea, I pondered life’s most important question: “Why aren’t my users synchronizing from my on-premises Active Directory to my Microsoft Entra ID tenant?” During my initial Password Hash Sync attempt, my synchronization service account was created, but none of the users synchronized, and the installation service timed out with this error: “An internal problem has occurred. It appears that you are resuming a scenario that was not completed previously during installation.

If the Microsoft Entra Connect (Azure AD Connect) wizard fails to install, the following errors may occur: An internal problem has occurred. It appears that you are resuming a scenario that was not completed previously during installation. Please uninstall and try again. No registered products found. The synchronization service scheduler is suspended until this setup wizard is closed. Learn more about ‘Scheduler and installation wizard. To resolve these issues, follow these steps: