Share via

[SOLVED] The .xlsx file type is missing from the file types list and cannot be added

Anonymous
2022-02-17T14:25:06+00:00

Due to the subject the xlsx files are saved (and treated) as Internet Explorer files (!!) and the ways to open them in Excel is either by choosing 'Open With' and select Excel or open Excel first and then open the file through 'File Open'. If I click on the file it tries to open as an IE document!

I've tried adding the .xlsx extension in the default file types list but Windows 11 won't let me do it.

I checked the Indexing Options (File Types) and .xlsx is present in the list.

Windows for home | Windows 11 | Files, folders, and storage

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments

10 answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Rodrigo Queiroz 77,500 Reputation points Independent Advisor
    2022-02-18T14:15:36+00:00

    So let's try working on the registry:

    Open the Notepad, copy and paste the text below and save the file with the extension .reg

    Double click the file to open and apply the changes into the registry.

    Restart to apply the changes

    Windows Registry Editor Version 5.00

    [HKEY_CLASSES_ROOT.xlsx]

    "PerceivedType"="document"

    @="Excel.Sheet.12"

    "Content Type"="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"

    [HKEY_CLASSES_ROOT.xlsx\Excel.Sheet.12]

    [HKEY_CLASSES_ROOT.xlsx\Excel.Sheet.12\ShellNew]

    "FileName"="C:\Program Files\Microsoft Office\Root\VFS\Windows\ShellNew\excel12.xlsx"

    [HKEY_CLASSES_ROOT.xlsx\PersistentHandler]

    @="{4887767F-7ADC-4983-B576-88FB643D6F79}"

    [HKEY_CLASSES_ROOT.xlsx\ShellEx]

    [HKEY_CLASSES_ROOT.xlsx\ShellEx\PropertyHandler]

    @="{33154C99-BF49-443D-A73C-303A23ABBE97}"

    [HKEY_CLASSES_ROOT.xlsx\ShellEx{8895b1c6-b41f-4c1c-a562-0d564250836f}]

    @="{00020827-0000-0000-C000-000000000046}"

    [HKEY_CLASSES_ROOT.xlsx\ShellEx{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}]

    @="{72B66649-3DBF-429F-BD6F-7774A9784B78}"

    3 people found this answer helpful.
    0 comments
  2. Anonymous
    2022-02-17T15:43:59+00:00

    Once again I thank you for your reply and effort to provide help.

    Following your instructions again to the point I could, since there was no 'Always use this app to open...' check box.

    Choosing 'Choose another app' and finding Excel.EXE manually also lacked the option to always use this app to open

    3 people found this answer helpful.
    0 comments
  3. Anonymous
    2022-02-19T14:43:06+00:00

    No, I thank YOU for responding and not giving up! It's a tough one!

    1 person found this answer helpful.
    0 comments
  4. Rodrigo Queiroz 77,500 Reputation points Independent Advisor
    2022-02-19T14:27:22+00:00

    I'm sorry, I'm running out of possible fixes and solutions. Since this is an open forum, let's see if another member of the community has a better solution to the issue. Thank you.

    1 person found this answer helpful.
    0 comments
  5. Anonymous
    2022-02-18T22:02:35+00:00

    Once again I thank you for your effort. There was a difference (at [HKEY_CLASSES_ROOT.xlsx] "Content Type") between my registry and what you have posted which I corrected and restarted with no luck.

    My registry now looks like:

    Windows Registry Editor Version 5.00

    [HKEY_CLASSES_ROOT.xlsx]

    "PerceivedType"="document"

    @="Excel.Sheet.12"

    "Content Type"="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"

    [HKEY_CLASSES_ROOT.xlsx\Excel.Sheet.12]

    [HKEY_CLASSES_ROOT.xlsx\Excel.Sheet.12\ShellNew]

    "FileName"="C:\Program Files\Microsoft Office\Root\VFS\Windows\ShellNew\excel12.xlsx"

    [HKEY_CLASSES_ROOT.xlsx\PersistentHandler]

    @="{4887767F-7ADC-4983-B576-88FB643D6F79}"

    [HKEY_CLASSES_ROOT.xlsx\ShellEx]

    [HKEY_CLASSES_ROOT.xlsx\ShellEx\PropertyHandler]

    @="{33154C99-BF49-443D-A73C-303A23ABBE97}"

    [HKEY_CLASSES_ROOT.xlsx\ShellEx{8895b1c6-b41f-4c1c-a562-0d564250836f}]

    @="{00020827-0000-0000-C000-000000000046}"

    [HKEY_CLASSES_ROOT.xlsx\ShellEx{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}]

    @="{72B66649-3DBF-429F-BD6F-7774A9784B78}"

    1 person found this answer helpful.
    0 comments