Software executed using subprocess.Popen() or os.system() may encounter errors due to DLLs

The following two lines of code execute the software, but the software fails midway due to a missing DLL: “Failed to execute ‘regsvr32 /s CommonEvent.dll’”.
subprocess.Popen('C:\\BackUp\\Backup.exe', shell=True) os.system('C:\\BackUp\\Backup.exe')
When manually executing C:\BackUp\Backup.exe, the program runs and completes its task without issue. I have looked for a solution but have not been able to find the cause of the problem. I would appreciate any help.

The error message doesn’t say “missing DLL”, it says “Failed to execute”. I suspect that it’s a permissions problem, i.e. it needs to executed with administrator privileges.

(post deleted by author)

Thank you for your opinion. I have found that the subprocess.Popen() and os.system() functions in Windows 10 may have difficulty obtaining the highest privileges.