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In ArcGIS Server, publishing a service returns the following error message:
Error: System.PublishingTools.GPServer: java.rmi.UnmarshalException: Error unmarshaling return header; nested exception is: java.net.SocketException: Connection reset
The ArcGIS Server account does not have the appropriate permissions to access the required folders. This commonly occurs in environments that apply group policies through an Active Directory, which can automatically revoke account privileges based on the policy configured.
Warning: It is recommended that users backup their data before proceeding. If necessary, consult with the organization's IT administrator before making the following changes.
Note: Another method to repair the ArcGIS for Server installation is to rerun the ArcGIS for Server installation file.