Probability score: 0.6  

Question improvement suggestion: Provide the exact error message and any specific troubleshooting steps you have already taken to resolve the issue.  

In the meantime, based on the information you have provided, here is a suggested answer to your question:  

Hello Daniela,  

It sounds like you're facing a frustrating issue with Trados Studio 2019 on Windows 11 via Parallels. Here are some steps you can take to troubleshoot the 'IP Project Management Service could not be started' error:  

**Step 1:** Close Trados Studio completely.  

**Step 2:** Navigate to the following directory:  

`C:\Users\%username%\AppData\Roaming\SDL\SDL Trados Studio\19`  

(Ensure that hidden items are visible in Windows File Explorer by clicking on the "View" tab and checking the "Hidden items" checkbox.)  

**Step 3:** Rename the `Plugins` folder to `Plugins_old`. This will disable any third-party plugins that might be causing the issue.  

**Step 4:** Check if the .NET Framework is properly installed. Go to Control Panel > Programs > Turn Windows features on or off, and ensure that .NET Framework 3.5 and .NET Framework 4.8 Advanced Services are checked.  

**Step 5:** If the issue persists, consider running a repair installation of Trados Studio. Go to Control Panel > Programs and Features, find Trados Studio, right-click on it, and select "Repair".  

**Step 6:** Check for any antivirus software that could be interfering with the application. Adding the Trados Studio installation folder as an exception in your antivirus settings can sometimes resolve such issues.  

**Step 7:** If none of these steps work, you may want to check for any recent Windows updates or reinstall Trados Studio as a last resort.  

If you continue to experience issues, please provide any additional details about the error message or any other troubleshooting steps you've already attempted.  

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

I allready tried all this and it doesn't work, even by reinstallted Studio 2019.