16
- June
2015
Posted By : Alexander Goida
The ‘TestWindowPackage’ package did not load correctly

This issue is experienced while opening the test explorer or running all tests in VS. To resolve the issue try the following steps:

  1. Close all instances of .
  2. Delete all files in AppData\Local\Microsoft\VisualStudio\12.0\ComponentModelCache (Note that directory is located in Local.)
  3. Restart, if that doesn’t work then start over with step 4.
  4. From a Visual Studio Command Line do this operation: devenv /setup

The points 1 and 2 should fix the issue. But I found that sometimes more steps are required.

See also

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