Re-register file types with a Microsoft Office program
When you are not able to open a Microsoft Office document even though it is associated with the correct file type, you must re-register the file type with the appropriate Microsoft Office program, such as Excel, Word, or PowerPoint.
In these steps, program.exe is a placeholder for the executable file for the Microsoft Office program that you want to re-register. If you installed Microsoft Office to another location, use the path that is correct for that location.
About this task
Note: If you are using the command line on version 7 of Microsoft Windows operating system, you must elevate the rights of the command line to perform certain tasks, such as re-registering file types. To open an elevated command prompt, or a command prompt in Administrator mode, right-click the command prompt shortcut, and select Run as Administrator.
- From the Start menu, click Run.
- To disassociate the program version, in the Open box,
type the following command, and then click OK:
- To specify the default version, from the Start menu, click Run.
- In the Open box, type the following
command, and then click OK: