Symptom
New XML definitions are failing to download when refreshing files. Customer was able to succesfully refresh files if a web browser was open by clicking on Help - Refresh Files.
ST.Protect.managed.<username>.log shows:
The remote server returned an error: (401) Unauthorized
Example
Error: File not downloaded: PatchInstaller.msi
The remote server returned an error: (401) Unauthorized
Cause
Winhttp proxy settings were not in sync with Internet Explorer proxy settings.
Resolution
Follow instruction in the following document to verify proxy settings and transfer Internet Explorer proxy settings: