Toolchain Manager doesnt open after installing

[Tal.]

after i installed toolchain manager in nRF connect desktop, i want to open toolchain manager. However, the following error message opens. I am using Windows. 

[SwRa]

Hi Tal,

Did you try restarting as well as restoring the default settings as shown in the screenshot.?

Regards,

Swathy

[Tal.]

yes I tried it. However, it doesnt work