Can't open the solution of the user account in the "Control Panel"

Q: My system is Windows XP SP2. After reading an optimization article, I want to change the login interface back to the original Windows 2000 interface. I need to use the system account management, but I am opening the Control Panel→Users. "Account" popped up an error box, prompting "parameter error", how can I solve it?

A: This is because the Windows XP user account uses the HTML interface, and the registration status of the DLL file displayed in the system about HTML will cause this failure. The solution is to re-register these DLL files using the Regsvr32 command. Click "Start → Run", enter CMD in the run box to enter the "Command Prompt", and then execute the following commands.
Regsvr32 /S jscript.dll
Regsvr32 /S nusrmgr.cpl
Regsvr32 /S /i mshtml.dll
Regsvr32 /S themeui.dll
Regsvr32 /S Vbscript.dll