Hi Sang Woo, Try this : 1) Close debugger 2) Delete registry key : HKEY_CURRENT_USER\\Software\\Compuware\\Uniface\\USYS9\\State\\UDBG\\forms 3) restart debugger Gilles.

Hey Gilles, I don't think it's possible for me to do that, the Uniface application is installed in my company's remote network, not my actual computer. Plus nobody else using the same application through their computers are having any problems with the window not showing, just mine. Thanks for the suggestion though.

Hi, The registry key HKEY_CURRENT_USER concern only your PC  : "The HKEY_CURRENT_USER subtree contains the user profile for the user who is currently logged on to the computer. The user profile includes environment variables, personal program groups, desktop settings, network connections, printers, and application preferences."   You can also try to modify Debugger Preferences  (udbg.cnf) :    "On Startup : apply default state" "On Startup : apply last state" or also directly  modify/delete udbg.cnf  but ... be carefull debugger preferences file must be shared on network

In the debugger, click the icon top left in the title bar (of the debugger). In the menu that appears click Setup. Click the State tab. Check the checkbox. State will be deleted when you exit the debugger. Start the debugger again -> form size and location should be normal again.

Thanks Theo! Your solution did the trick! Quick Watch is back! I didn't end up fiddling with the registry or configuration files, but thanks for your help too Gilles!