The following error message can be encountered when either you just simply launch SDL Trados Studio (and you cannot open it at all) or when it is already launched and you are trying to run a Batch Task:

 Cannot validate SDL plug-in: Sdl.ProjectAutomation.AutomaticTasks.WIPReport.WIPReportTask

Workaround when you get the error after launching SDL Trados Studio:

1. Close the error message.
2. Go to: C:\Users\YourUserName\AppData\Roaming\SDL\SDL Trados Studio​ and rename:

• For Studio 2017: rename the folder 14.0.0.0 to OLD_14.0.0.0
• For Studio 2019: rename the folder 15.0.0.0 to OLD_15.0.0.0

3. Launch again SDL Trados Studio if possible using Administrative rights.

Note: If you do not see the AppData folder, follow these steps from the below article to unhide it:
 
https://gateway.sdl.com/apex/communityknowledge?articleName=000001137 


Workarounds when you get the error message while trying to run a Batch Task

Solution A:
1. Open Studio
2. Click on Add-Ins -> Plug-Ins
3. Uncheck WIP Report
4. Restart Studio

Solution B:

1. Try to repair the Studio installation. https://gateway.sdl.com/apex/communityknowledge?articleName=000001414

2. If you still have issues Uninstall Studio from Control Panel and install it again.

3. If normal installation doesn't work, perform a manual installation : How to perform a manual installation

Corrupted installation