Restore TIFF filetype association after migration to Office 2007

After an upgrade to Office 2007, you may lose your file type association of TIF or TIFF files. When you doubleclick a TIF or TIFF, Windows asks you what program to use to open the file. This is behavior by design. To repair or restore your filetype association of TIFF files after upgrading to Office 2007, you only need to do the following:

1. Open a command prompt (Start -> Run -> cmd). Make sure you’re logged on as Administrator, or that you have administrator rights
2. Type the command: “assoc .tif=MSPaper.Document” (without the quotes) and press Enter
3. Type the command: “assoc .tiff=MSPaper.Document” (without the quotes) and press Enter

Your TIF and TIFF files are now associated with MSPaper.Document, which is Microsoft Office Document Imaging. This means that when you doubleclick a TIF or TIFF file, the file will automatically open with Microsoft Office Document Imaging.

If your MDI files are neither associated to Microsoft Office Document Imaging, do the following:

1. Open a command prompt (Start -> Run -> cmd). Make sure you’re logged on as Administrator, or that you have administrator rights
2. Type the command: “assoc .mdi=MSPaper.Document” (without the quotes) and press Enter

Now, your MDI files are also associated with Microsoft’s Office Document Imaging.