The single most common crash fix is installing the Visual C++ 2010 Redistributable Package (x86) — even on 64-bit Windows, because Geometry Dash 1.0 is a 32-bit application.
This resolves the MSVCP100.dll error instantly. Geometry Dash 1.0 Download Pc Fixed
A Geometry Dash 1.0 download PC fixed bundle includes two crucial files that prevent black screen and crashes: The single most common crash fix is installing
If your downloaded copy lacks these, create a new text file named steam_appid.txt in the game folder. Inside, write 322170 (the Steam App ID for Geometry Dash). This fools the executable into thinking Steam is running. This resolves the MSVCP100
This is the step 99% of users miss.