Hi bala,
There are many things you can do here. First, though, it would be helpful if you gave us a lot more information. For instance, when you say server, what do you mean? An actual server or a client computer which you use to run SQL? You have not mentioned what OS you are using on the "server." Another important fact would be does this only happen when you use RDC or does it happen when you are physically at the computer.
The are many ways that a computer can "hang." The terminology is important too. Generally, the word "hang" means a program which is no longer responding due to a malfunction in messages from Windows Desktop Manager and the app. What you are describing is a situation where the app never closed fully or at some point tried to start but didn't open properly.
This can happen if a program closes but doesn't release the RAM it was using. Windows will now look at that program as possibly being open, therefore, it won't continue to open it.
Another thing is that each application was written by the programmer to close a certain way. For instance, selecting CTRL + Q or CTRL + L (when that program is active) will close the program. Or you can simply select those commands under File. I generally use the "x" but I would try the other.
It could also be that another program is interacting with it and hinders its ability to close. If this is happening EVERY time or most times, try this:
Type MSCONFIG in the Search field in Win 7 or in the Run command from the Start button. You will see a window with a Startup selection on the left hand side with a default of Normal startup. Change that to Selective startup. You can use the services tab (and hide all Microsoft services, then turn off five at a time, select apply, then OK and it will require a reboot. Try closing and restarting AC now. If it works properly, then one of those five services is the culprit. Continue on, turning the five back on and five back off. The more productive will be the Startup, which you do the same way. Norton A/V may be revealed doing it this way as it is very stingy and clingy with other programs.
I agree with Wendell, although I prefere to right-click on the taskbar to start Task Manager. You can get free 3rd party task managers which are much more powerful.
Finally, you can use Sandeep's extremely simple batch file to close AC immediately.
Open a notepad. Type:
taskill /f /im "Amazing charts.exe" (exactly this way) and save the text with a name like Kill AC, so that you have Kill AC.txt. Now choose Rename and change the extension from .txt to .bat and save. Click on "Changing the extension may cause this program not to work." and you will have Kill AC.bat. Now all you have to do it click on that icon and you will completely close AC whether it is actually up and running or slightly closed.
Finally, go to AC folder and open Advanced Options and run it as the administrator. Run the three bit ones on the front window.
Again, based on your question and only stating "server" whether or not this is a real server or just a client with SQL and AC's databases on it, it is never a good idea to run AC or most programs on the server. The computer with AC on it should sit there in the corner without being touched.
