SQL Assistant menu no-show when SSMS is started with RunAs

1. Open SSMS normally.
2. Click 'New Query' button.
3. Blank query opens for editing and 'SQL Assistant' menu appears on the menu bar.

1. Open SSMS with right-click and RunAs a different user.
2. Click 'New Query' button.
3. Blank query opens for editing
4. 'SQL Assistant' menu DOES NOT appear on the menu bar.

The add-ins for SSMS are registered for the "current user" - this is how the add-ins interface handler is designed in SSMS.

So if you installed SA (SQL Assistant) for user A then started SSMS as user B the add-in registered in the A account is not loaded by SSMS. The solution is actually simple. Register the add-in for both users. Close and restart SA as user B. Open Options, locate MS Management Studio target on the Targets page, Expand advanced options, turn off and on SSMS Add-in option and click OK or apply buttons. Now if you start SSMS as user B you will see the same menu and functionality. After that it should work for both user A and user B.

Your suggestion fixed my problem. Thank you.