This dll file serves the general purpose of supporting common Microsoft Applications such as Microsoft Internet Explorer and Microsoft SQL Server. It’s absence or corruption usually results in minor error messages when running such software. As with many dll files this is easily resolved by ensuring its presence or acquiring it perhaps online and then placing it in the system folder. Once this is done simply open the Run command box and type “regsvr32 msxml3.dll” and your success should be evident through a pop-up.