Resolve Snow Update Service self-update failure caused by missing snowschema.version in srcsettings.json

Manual update procedure

1. Create a full backup or server snapshot of the Snow Update Service server.
2. Download the latest SUS client ZIP package from the Snow Update Service download portal:
   https://updatesportal.snowsoftware.com/download/sus
3. Stop the SnowUpdate Windows service.
4. Close the following applications:
• SUS client application
• SUS tray notification application
5. Rename the existing installation folder:
   C:\Program Files\Snow Software\Snow Update Service
   For example:
   C:\Program Files\Snow Software\Snow Update Service.old
6. Create a new folder:
   C:\Program Files\Snow Software\Snow Update Service
7. Extract and copy all files from the downloaded ZIP package into the new folder.
8. Copy the following items from the previous installation folder into the new installation:
• The existing Resources folder
• The previous working srcsettings.json file
9. Allow Windows to merge or overwrite the files when prompted.
10. Reopen the Snow Update Service application.