Godot Version
Godot Engine v4.3.stable.mono.official
Question
When I try to run the game, it wont run, instead I get this error:
CS2012:
C:\Users\pc\Documents\GAME_DEVELOPMENT\Godot\Icey3.godot\mono\temp\obj\Debug\GameName.dll cannot be open – Access to the path ‘C:\Users\pc\Documents\GAME_DEVELOPMENT\Godot\Icey3.godot\mono\temp\obj\Debug\GameName.dll’ is denied… CSC(0,0)
How do I fix it 
Could be antivirus blocking this or another process is accessing it would be my guess.
Do you use OneDrive or another cloud solution for your documents folder? This sometimes can cause problems too.
It indeed was antivirus. Thanks.
If the DLL file is specific to a particular game, try reinstalling the game. This may replace any missing or corrupted DLL files that are …dll error message appeared during or after you installed a spacebar clicker program, a hardware component, or a driver, uninstall the program, the hardware component, or the driver. Then restart Windows, and reinstall the program, the hardware component, or the driver.