Error message when opening the program - Trados Studio 2022

Question

I have just installed the above version of Studio. 
 I get past the first few windows but when I click "Finish" to open the program I get the following message:

I looked at the knowledge base and did what they said:

Solution for error Service 'Sdl.TranslationStudio.Api.ProjectManagement.IProjectManagementService' could not be started (and for Sdl.ProjectApi.Implementation, System.xml) 
1. Close Trados Studio or the error message 2. Go to C:\Users\%username%\Documents\Studio 201X\Projects on your system 3. Delete the projects.xml file 4. Start Trados Studio and browse for your projects again in Projects view, from Open Project button

But nothing helps. The program will not open and I am stuck! 
 I'd be grateful for some help. 
 Thanks 
 Ruth

Paul · Answer

Ruth Moses 
 Try a full reset first. To do this just close Trados Studio and then rename this folder: 
 c:\Users\%username%\AppData\Roaming\Trados\Trados Studio\Studio17\ 
 to c:\Users\%username%\AppData\Roaming\Trados\Trados Studio\Studio17_old\ 
 If you can't find this folder then you need to unhide your hidden files/folders: 
 www.howtogeek.com/.../ 
 Then restart Trados Studio and see if that helped.

Paul · Answer

Ruth Moses We will be pleased to help you with this problem so have logged a support case on your behalf. We do prioritise customers who have a support contract so please keep in mind it could take up to 48 hours, especially over a weekend, but rest assured we will contact you as soon as we can. You will be contacted at the email address used for this Community. Support Case Id : 00730313 .

Paul · Answer

Ruth Moses 
 In the meantime, as you really won't get any help until the new year... most likely Tuesday (although you may get lucky for Monday) give a thorough clean up a go as this is something you can do yourself. 
 Clean install... try the following. 
 1. Uninstall Studio 2. Uninstall MultiTerm 
 Now manually delete these folders if they are still there (back up your TMs, Termbases, AutoSuggest Dictionaries and Projects first in case you make a mistake): 
 c:\ProgramData\Package Cache\Trados\TradosStudio2022\ c:\ProgramData\Package Cache\Trados\MultiTermDesktop2022\ c:\Program Files (x86)\Trados\Trados Studio\Studio17\ c:\Program Files (x86)\Trados\MultiTerm\MultiTerm17\ c:\Users\%username%\AppData\Local\Trados\Trados Studio\17\ c:\Users\%username%\AppData\Local\Trados\Trados Studio\Studio17\ c:\Users\%username%\AppData\Local\Trados\MultiTerm\MultiTerm17\ c:\Users\%username%\AppData\Local\Trados\Trados Studio\17\ c:\Users\%username%\AppData\Roaming\Trados\Trados Studio\Studio17\ c:\Users\%username%\AppData\Roaming\Trados\MultiTerm\MultiTerm17\ c:\Users\%username%\Documents\Studio 2022\Project Templates\ c:\Users\%username%\Documents\Studio 2022\Projects\projects.xml 
 I think that's about it for a clean install. Then reinstall and try again.

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Error message when opening the program - Trados Studio 2022

Solution for error Service 'Sdl.TranslationStudio.Api.ProjectManagement.IProjectManagementService' could not be started (and for Sdl.ProjectApi.Implementation, System.xml)