Hello Alisa Gouseva ,

Is there anything more to the error- or do you only get this?

This error on its own, often implies a corrupt operating system/installation 

Please make sure everything is updated including OS/drivers etc 

The following Wiki will help you guide you through the process-

https://community.sdl.com/product-groups/translationproductivity/w/customer-experience/3392/01-2-trouble-shooting-unexplained-errors-and-unwanted-behaviour-in-trados-studio-multiterm

Parts 1&2

Please let me know if this helped resolve the problem.

Hello Alisa Gouseva ,

Is there anything more to the error- or do you only get this?

This error on its own, often implies a corrupt operating system/installation 

Please make sure everything is updated including OS/drivers etc 

The following Wiki will help you guide you through the process-

https://community.sdl.com/product-groups/translationproductivity/w/customer-experience/3392/01-2-trouble-shooting-unexplained-errors-and-unwanted-behaviour-in-trados-studio-multiterm

Parts 1&2

Please let me know if this helped resolve the problem.

Thanks a lot! I've followed all instructions and they did help. Everything finally is back on track.