Please take caution in ensuring the file is placed in the correct file directory. In some rare cases you might need to contact KEIL directly for the correct file version you need. Some c51.exe files are not currently in our database, but they can be requested by clicking the 'Request' button next to the respective file version entry. See the table below for a list of c51.exe files we have available for download for most Windows versions (also including %%os%%). The Windows Executable File format, typically carrying the EXE file extension, are known as Executable Files. In some cases, the Windows registry is attempting to load a c51.exe file that no longer exists, therefore we recommend running a registry scan to repair any invalid file path references. Downloading and replacing your EXE file can fix the problem in most cases. These errors are often encounterd during the launch of C51 / CX51. The root causes of EXE executable errors associated with c51.exe include a missing or corrupt file, or in some cases, a malware infection.
