This may be due to either the updater service not working correctly or if there are no new updates available that the service can install.
The updater service is healthy if it’s running and there are no errors recorded in the event log (Applications and Services logs -> Microsoft -> AadApplicationProxy -> Updater -> Admin).
Important
Only major versions are released for auto-upgrade. We recommend updating your connector manually only if it's necessary. For example, you cannot wait for a major release, because you must fix a known problem or you want to use a new feature. For more information on new releases, the type of the release (download, auto-upgrade), bug fixes and new features see, Microsoft Entra application proxy: Version release history.
To manually upgrade a connector:
Download the latest version of the connector. (You will find it under Application Proxy on the Microsoft Entra admin center. You can also find the link at Microsoft Entra application proxy: Version release history.
The installer restarts the Azure AD Application Proxy Connector services. In some cases, a reboot of the server might be required if the installer cannot replace all files. Therefore we recommend closing all applications (i.e. Event Viewer) before you start the upgrade.
Run the installer. The upgrade process is quick and does not require providing any credentials and the connector will not be re-registered.