[lpool1]

That's worked andy thanks for your help. My mistake with the quotations. There is an option in the command prompt to overwrite the existing file. Is there something I can add to the code to automatically approve?

Lpool1

[andythepandy]

yes, just stick /f at the end of the line like:

reg add "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Desktop\Components" /v DeskHtmlVersion /t REG_DWORD /d "0" /f

[Squashman]

Good Job OutCaste

[TheOutcaste]

Don't forget to delete those two erroneous keys. You can do it from the Registry Editor, or the command line.
Copy and paste these two lines into the Command Prompt, then press Enter (you can paste them both at once)

Reg Delete "HKCU\Software\Microsoft\Internet Explorer\Desktop\Components /v DeskHtmlVersion /t REG_DWORD /d 0" /F
Reg Delete "HKCU\Software\Microsoft\Internet Explorer\Desktop\Components /v DeskHtmlVersion /t REG_DWORD /d 0x00000000" /F

To paste into the Command Prompt, right click the Window, click Paste. If Quick Edit is enabled, the right click will paste immediately.