Session keep locked when try logging in via team viewer windows 7

I have windows 7 workstation in office linked to Active directory. This is virtual machine and i login via citrix.

I have installed teamviewer on it . It was able to log into it on first day but after that everytime i log in the desktop is locked with useame , password prompt.

If i enter details , it logs me in and after 3-4 seconds it again lock the computer.

why is that