JSI Tip 6434. The Regsvr32.exe '/c' switch is not available in Windows 2000 or Windows XP?

In Windows NT 4.0 and other previous operating systems, you could use the /C switch with Regsvr32.exe to send output to the console, which allowed you to script the process and test for the result. This functionality is no longer included in Windows NT 5.0 and higher.

You can no longer issue regsvr32 /c mshtml.dll >C:Folderreg32out.txt.