You may be unable to open Snow Update Service (SUS) and receive the following error: A fatal error has occurred. Snow Update Service will shut down.
This issue is caused by unformatted or unrecognizable characters. The UpdateServiceGUI log shows that the update history could not be parsed:
2021-05-28 10:40:37,877 [1] INFO SnowSoftware.Update.Security.ClaimsManager [(null)] - Getting application credentials from registry for SnowLicenseManagerEnterpriseEdition
2021-05-28 10:40:38,814 [1] ERROR SnowSoftware.Update.History [(null)] - Could not parse history from file.
System.Xml.XmlException: Unexpected end of file has occurred. The following elements are not closed: info, update, product, updates. Line 5669, position 1.- Open Windows Services (
services.msc). - Locate and stop the Snow Update Service service.
- Navigate to
C:\Program Files\Snow Software\Snow Update Service\Resources. - Rename the
updateHistoryfile, for example, toupdateHistoryBackup. - Return to Windows Services.
- Restart the Snow Update Service service.
- Open the Snow Update Service application.
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