For those who are lazy to retype vss user name and password every time it get launch,
step below might help you up.
1. Go to Control Panel –> System
2. Click on “Environment Variable” in Advance tab.
3. Create user variable name as SSUSER then add variable value as your vss user name.
4. Create user variable name as SSPWD then add variable value as your vss password.
5. Click OK to exit all panel.