SQLToolsDiag is a tool intended to help customers and CSS engineers to troubleshoot SQL Server tools issues.
The vision is to provide an easy-to-use tool that will put in a centralized location the logs that may be required either to troubleshoot your issue, either by you, or by Microsoft support engineers.
Currently, it can help troubleshoot issues on SSMS, SSDT, SSMA, DMA and DEA.
To use it, you will have to run it as administrator, then follow the in screen options for each menu option available.