Log in to the Access Document Manager Administrator and confirm your licence is valid. If it has expired, a prompt appears on login to request a new licence — email [email protected] to request one. If your licence is valid, the error is likely caused by a Windows update on your IIS server. The following Windows Server 2012 updates are known to cause this issue:
Update for Microsoft Windows (KB4565635).
Update for Microsoft Windows (KB4565613).
A configuration change to the web service is needed to resolve this issue. The Access support team will need to investigate and apply it. If you have trouble contacting the support team, see Get support in Access Document.