EntraID Connect (formerly known as Azure AD Connect) has a new version v2.3.6
All v1 installs have stopped working. Oddly, the logs don't show "error" messages but rather "informational" message.
If you want to see the error messages, just run:
Get-ADSyncScheduler
In case you need a first hand experience, you can just download the msi and install in-place. Obviously, snapshot before hand in the event something goes wrong.
To reassure you, this is an environment with more than 10K objects, uses a separate sql database on a separate server and a standalone Managed Service Account (sMSA); instead of a group managed service account (gMSA).
You will need a Global Admin account on the Entra ID during the process.
But all the sync rules and setting remained intact.