sdl.desktop.Platform.CommandBars.IActionService error

Question

I have this error and cannot start the Trados anymore. I was trying to add new version of InformationBox, uninstalled older version, tried to add the new one, but did not appear as installed in Trados.So I decided to restart the Trados, and then this error appears and cannot start the software anymore. I even restarted the computer but same thing. Some one can help me? I really need some help.

Removed AI Suggestion
[edited by: Keiko Miyazaki at 5:03 PM (GMT 0) on 19 Dec 2025]

RWS Community AI · Accepted Answer

Probability score: 0.8 
 Question improvement suggestion: Please provide the exact version of Trados Studio you are using and any specific error messages you see when trying to start the application. 
 In the meantime, based on the information you have provided, here is a suggested answer to your question: 
 Hello, 
 It sounds like you're experiencing a frustrating issue with Trados Studio. Here are some steps you can follow to try and resolve the "sdl.desktop.Platform.CommandBars.IActionService" error: 
 **Step 1:** Close the error message if it is still open. 
 **Step 2:** Navigate to the appropriate folder based on your version of Trados Studio. You can copy and paste the following paths into Windows File Explorer: 
 - For Trados Studio 2022: `C:\Users\%USERNAME%\AppData\Roaming\Trados\Trados Studio\17` 
 - For Trados Studio 2021: `C:\Users\%USERNAME%\AppData\Roaming\SDL\SDL Trados Studio\16` 
 - For Trados Studio 2019: `C:\Users\%USERNAME%\AppData\Roaming\SDL\SDL Trados Studio\15` 
 - For Trados Studio 2017: `C:\Users\%USERNAME%\AppData\Roaming\SDL\SDL Trados Studio\14` 
 **Step 3:** In the folder, locate the "Plugins" folder and rename it to something like "Plugins_old". 
 **Step 4:** Optionally, you can run a repair installation of Trados Studio. To do this, go to Control Panel > Programs > Programs and Features, find Trados Studio, right-click on it, and select "Repair". 
 **Step 5:** Restart Trados Studio and check if the issue persists. 
 If the problem continues, you may also want to check the Local and Program Data folders for any additional instances of the Plugins folder and rename them as well. 
 If these steps do not resolve the issue, please consider uninstalling and reinstalling Trados Studio, ensuring you run the installer as an administrator. 
 I hope this answer addressed your question. If not, please reject the answer, add the question improvement suggestion information, and click the RWS Community AI checkbox on the right to try again. 
 RWS Community AI

Anca Stoian · Answer

Hi Keiko Miyazaki , 
 Do you still have the above error and cannot start Trados? 
 Kind regards, 
 Anca

Trados Portfolio > 2. Licensing and Installation

sdl.desktop.Platform.CommandBars.IActionService error