Why Windows Explorer Search not work?

Posted on 2011-10-24
Last Modified: 2012-05-31
The search feature of Windows Explorer recently broke. Example: I specify"run" in the  "A word or phrase in the file" box, and a folder in "Look in", (All Files and Folders)"Type of file". I  click Search, and it returns a subset of the files containing that word.  The extensions are .txt. .xslx. .xml.

Other extensions such as .a, .b, .py are ignored.

What could be wrong? How do I fix this?

In another folder I get some but not all of the relevant .py files.
Question by:ramrom
    LVL 16

    Expert Comment

    Go to Windows Explorer Tools / Folder Options / File Types and be sure the extensions you seek are in the list.

    Alternatively, search for Files Named: "*.py"  rather than using the Type filter.
    LVL 66

    Accepted Solution

    Using the "A word or phrase in the file" search criterion may not work

    It is not broken, it is by design......

    From a CMD prompt, you can paste the following... Think a reboot is needed to proces...

    reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ContentIndex" /v "FilterFilesWithUnknownExtensions" /t reg_dword /d "0x1" /f

    LVL 17

    Author Comment

    Thanks for the pointer. As the MS article points out FilterFilesWithUnknownExtensions may be overkill and costly.

    Is there a way to specify the filter just for a specific extension?

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