Unable to register or validate a DB in ArcGIS Server Manager. Server SEVERE Logs are as below.
01. The connection property set was missing a required property or the property value was unrecognized.
FDO error: -2147209112 Unable to instantiate class for xml schema type: DEWorkspace
02. Invalid xml registry file: c:\program files\arcgis\server\framework\runtime\arcgis\bin\XmlSupport.dat
ArcGIS Enterprise 10.8.1, Multi-machine Deployment, Server in S1, Portal in S2, Data Store & RDBMS in S3.
Any suggestions Please.