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Downgrading DataHub to a Previous Version

When a new version of DataHub first runs, it makes a copy of the configuration folder from your previous version, and then upgrades the configuration to be compatible. Your previous configuration is stored in the same folder, with an extension of #.bak, where # is a numeric sequence number. For example, if your DataHub configuration folder is:

C:\Users\MyName\AppData\Roaming\Cogent DataHub

Then the configuration backup folder will be:

C:\Users\MyName\AppData\Roaming\Cogent DataHub.1.bak

When you revert to a previous version of the DataHub, you need to manually restore this backup to its original name. The full process is:

  1. Stop DataHub and all tools, like WebView, Remote Config, DataPid, etc.

  2. Uninstall DataHub.

  3. Install the older DataHub version, but do not start it.

  4. Using the Windows file explorer, rename or delete the configuration folder (e.g., C:\Users\MyName\AppData\Roaming\Cogent DataHub)

  5. Using the Windows file explorer, copy the backup folder to the configuration folder name. For example, copy:

    C:\Users\MyName\AppData\Roaming\Cogent DataHub.1.bak

    to

    C:\Users\MyName\AppData\Roaming\Cogent DataHub

  6. Start DataHub

Using DataHub WebView after Downgrading

If you are using WebView in Silverlight, you will need to clear your Internet Explorer browser cache so that Internet Explorer will load the older version of WebView. If you do not clear the browser cache you may see an error message which says "The server is not currently available. Try again later."