How to deactivate Studio 2014 FL+ without opening the program?

Question

I got an error today while trying to open SDL Studio 2014 FL Plus: "An unexpected error has occurred while loading application plug-ins". 
 I tried all the proposed solutions with renaming and deleting xmls, renaming folders, etc. but nothing works. 
 I need to uninstall the program, but I don't know how to deactivate its license since i can't open it. 
 
 Any ideas? 
 thanks 
 evi

Walter Blaser · Accepted Answer

Evi 
 
You don't need to deactivate your license in order to uninstall the program unless you want to transfer the program to another PC and are not going to reinstall it. Deactivation is only required if you reinstall Windows, reformat your hard disk or want to transfer the license to another computer. 
 
Your error related to plug-ins should be solved by uninstalling the plug-ins and running a repair of Studio. 
 
Walter

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How to deactivate Studio 2014 FL+ without opening the program?