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What DLLs are associated with Outlook search?

What  DLLs are associated with Outlook search?
Challenge: The search filters in Outlook 365 are greyed out.
Things tried: Executed Windows Update
2. Ran a full repair of Office 365
3. Ran SFC /scannow ( I believe, my notes are not on me)
4. Uninstalled  and re-installed Office 365
5. Uncheck Outlook and rechecked it, via Index options
6. Stopped  and restarted Windows search
7. Tried a different Windows profile, the problem still persist.
8. Removed Bing Desktop search
9. Microsoft Support and Recovery Assistant for Office 365 was executed

Final resolution would be to re-image the laptop, but I would  like to now the probably root cause, so I am suspecting a Windows Update caused the problem.
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Ahmed Abdelbaset
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Open registery and navigate to:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Windows Search

Then click in the right side pane, create a new DWORD (32-bit), name it PreventIndexingOutlook and give it a value 0.

Click the OK button and see if it has resolved the issue
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☠ MASQ ☠

KB4467684 can do this

I know you mentioned SFC but I don't see this in your list of things done so far so before hunting out the libraries...


At an admin command prompt:

DISM /online /Cleanup-Image /RestoreHealth

sfc /scannow

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In that order - with Outlook closed obviously.
Apologies if you've done that already and just not noted it.

Also more likely indexing is broken than a dll change being at fault
https://www.msoutlook.info/question/47
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ASKER

Thank you, I will try the above.
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ASKER

KB4467684 is not on the system.

System file protection did not find any integrity  violations.
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ASKER

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Windows Search

Then click in the right side pane, create a new DWORD (32-bit), name it PreventIndexingOutlook and give it a value 0, did not work. I will have to re-imagine, thank you all.
Did you try to delete user profile after backup important files.?
Before you reimage, try a Repair Install to see if that fixes the issue.

Assuming Windows 10, this is straightforward and you can Keep Everything.

https://www.microsoft.com/en-us/software-download/windows10

Windows 10 is running, so click on the Download button (not Upgrade Button, select Save.
Create a USB Windows Installation key and then run Setup on the USB Key.
This will launch the Repair and proceed normally.
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ASKER

The problem happen on two different Windows 10 profiles.
I can try John's suggestions, but I will have to re-image the system due to a complaint about a flicking /fuzzy screen.
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John
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ASKER

Thank you John.
You are very welcome and best of luck reimaging.