1. Download the Mshtml.dll file.
2. Right click the saved DLL file and click 'Copy.' Go to the 'Start' menu, click 'Computer,' double-click the 'C:' drive, double-click the 'Windows' folder and then the 'System32' folder. Right click anywhere in a blank space and click 'Paste.'
3. Go to the 'Start' menu, type 'Run' in the 'Start Search' box and press 'Enter.' Type Regsvr32 'C:\Windows\System32\mshtml.dll' in the search field and hit 'Enter' to register the DLL. Click 'Yes' in the pop-up window to confirm the registration.
4. Restart your computer.