Errors related to osetup.dll can arise for several different reasons. For example, an application is wrong, osetup.dll has been deleted or misplaced, or damaged by malicious software on your computer or corrupted Windows record.
The most common error messages are:
The program cannot be started because osetup.dll is missing from your computer. Please reload the app to fix this problem.
A problem occurred while starting osetup.dll. The selected module could not be found.
Error in downloadosetup.dll. The selected module could not be found.
The code cannot continue to be executed because osetup.dll is not found. Reinstalling the program may fix this problem.
osetup.dll is either not designed to run on Windows or it has an error. Try installing the software again using the original installation media or contact the system administrator or software vendor for support.
In the vast majority of cases, the solution is to reinstall osetup.dll correctly on your computer, to the Windows system folder. Instead, some programs, especially computer games, require putting a DLL file in the game/app installation folder.