Open With sub-menu which contains the drop-down list of programs, is missing for all the file types?Published: June 20, 2005
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When you right-click a file-type, you'll see the Open With context menu, which further expands and shows a drop-down list of possible applications that can open the particular file type. (Fig 1 shows the normal Open With menu)
Fig 1: The Open With menu expanded
In my Windows XP system, the drop-down did not appear, regardless of the file type that I tried to open. Fig 2 explains the problem.
Generally, this happens with the OpenWithList and the OpenWithProgID values are missing for that particular file-type.
But in my case, this happened to all the file types. The OpenWithList and the OpenWithProgID were not empty as I checked under the Fileext reg key. After working with the registry, I found that the openas entry that I added earlier in the following location was causing the problem:
(The openas command when implemented in the above registry key, adds the Open With option for ALL the file types)
After removing the openas entry, Open With functionality was reinstated.