Hello James Bloodworth,
Making sure your Microsoft Entra Connect installation is always up to date has never been easier with the automatic upgrade feature. When a new version is released, your installation is automatically upgraded.
The current state of automatic upgrade can be viewed with the PowerShell cmdlet Get-ADSyncAutoUpgrade.
It has the following states:
Enabled : Automatic upgrade is enabled.
Suspended : Set by the system only. The system is not currently eligible to receive automatic upgrades.
Disabled : Automatic upgrade is disabled.
You can change between Enabled and Disabled with Set-ADSyncAutoUpgrade.
Only the system should set the state Suspended.
For automatic upgrade to work, make sure you allow the URLs in your proxy server for Microsoft Entra Connect Health as documented in the below document
https://learn.microsoft.com/en-us/azure/azure-portal/azure-portal-safelist-urls?tabs=public-cloud
If the Synchronization Service Manager UI is running on the server, then the upgrade is suspended until the UI is closed.
Please let me know if you have further queries.