zlib.dll error usually appears when you run and install some programs or Windows start and shutdown and even Windows installation.

Common zlib.dll error messages
- "Zlib.dll Not Found."
- "Cannot find [PATH]\zlib.dll."
- "The file zlib.dll is missing."
- "This application failed to start because zlib.dll was not found. Re-installing the application may fix this problem."
- "Cannot start [APPLICATION]. A required component is missing: zlib.dll. Please install [APPLICATION] again."

How to install ZLib.dll file?

1. Press Start and select Run
2. Type CMD and press Enter (or if you use Windows ME, type COMMAND)
3. Type regsvr32 ZLib.dll and press Enter
4. In the end, you should receive a message saying that your file was successfully installed or uninstalled.