wuauclt.exe is a program which is probably legit. So, if wuauclt.exe is on your system, it is probably ok, and will NOT be a cause for concern. Even if your system is clean, we still advise you to purchase a well-known antivirus with a good track record, in order to yourself your system against potential security problems.
The default name and path where this application is stored is
The MD5 checksum for this file is c1c03ea437edda8a7d4d8786e5ae6751.
This application is NOT registered as a Windows service. This is good.
wuauclt.exe seems to use the functions of Windows SFC (System File Checker) or Windows File Protection.
This is a x64 executable. It runs using the full capacity of nowadays' CPUs.
The digital signature is missing from this program. The maker did not sign it. This is probably bad.
This executable does NOT have an uninstall command stored in registry.