D365 – XrmToolBox Loading Errors

Problem Description

When launching XrmToolBox, you may encounter errors similar to the following:

• Could not load file or assembly “NuGet.Protocol, Version=6.4.0.123, Culture=neutral, PublicKeyToken=31bf3856ad364e35” or one of its dependencies. The system cannot find the file specified.
• Could not load file or assembly “NuGet.Versioning, Version=6.4.0.123, Culture=neutral, PublicKeyToken=31bf3856ad364e35” or one of its dependencies. The system cannot find the file specified.
• And other related loading errors.

Resolution

These errors typically occur due to issues with one or more installed plugins in XrmToolBox. To resolve the problem, follow the steps below:

1. Navigate to the XrmToolBox plugin installation directory (see Additional Notes below if you are unsure of the path).
2. Close any running instance of XrmToolBox.
3. Delete the Plugins folder.
4. Reopen XrmToolBox — the plugin folder will be recreated automatically.
5. (Optional) Reinstall required plugins manually, or simply install them again from the XrmToolBox Store.

Recommendation: Deleting and reinstalling plugins usually takes only a short time. If you prefer not to delete directly, back up the plugin folder to another directory before restoring it later if necessary.

Additional Notes

Where is the Plugin Installation Directory?

Method 1: Locate in the C Drive

C:\Users\<YourUsername>\AppData\Roaming\MscrmTools\XrmToolBox\Plugins

Method 2: Locate via XrmToolBox

1. On the toolbar, click Configuration → select Setting.
2. In the Setting panel, go to Paths.
3. Click Open XrmToolBox storage folder.