📎 AI Summary:
The user reports that Cortana stopped working after a Windows 10 update and initially seeks help. Responses suggest reinstalling Cortana and the Shell Experience Host via PowerShell commands, but the user encounters issues with these commands. Ultimately, troubleshooting steps include using system repair tools like sfc/scannow and DISM, with the user having already run sfc in Safe Mode without issues and planning to try DISM. The overall sentiment indicates an attempted resolution for Cortana functionality problems caused by a recent Windows update.
brkkab

brkkab

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Thread Author #1
I was hoping somebody could help me solve this. Ever since the new version of Windows 10 Thursday Cortana isn't working.
I've run the Start Menu Troubleshooter>Advanced>Automatically Fix Errors and as the screenshot shows, it didn't fix it.
An image from 'Windows 10 1607 14393.351 Cortana Issues'. Windows troubleshooting report shows missing installation of ShellExperienceHost and Cortana apps.
 

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Solution
Neemobeer
Then you may have some corruption. You may want to try some of the repair commands. sfc /scannow and dism /online /cleanup-image /restorehealth
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Neemobeer

Neemobeer

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#2
Open an elevated powershell window and try and re-install both applications

Cortana
Code: 
Add-AppxPackage -Path "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\AppxManifest.xml" -Register -DisableDevelopmentMode

Shell Experience Host
Code: 
Add-AppxPackage -Path "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\AppxManifest.xml" -Register -DisableDevelopmentMode
 

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brkkab

brkkab

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Thread Author #4
I tried what you posted in PowerShell as Administrator and here's what it says.
An image from 'Windows 10 1607 14393.351 Cortana Issues'. PowerShell shows failed Add-AppxPackage commands due to HRESULT 0x80073CF9 install errors.
 

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brkkab

brkkab

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Thread Author #6
Could you post the whole command for both that I would use. I'm new to using PowerShell.
 

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brkkab

brkkab

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Thread Author #8
OK. They aren't working then as my above screenshot shows. Cortana worked until Microsoft updated 10 to a new version on Thursday, so there's obviously a bug in it.
 

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Neemobeer

Neemobeer

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#9
Then you may have some corruption. You may want to try some of the repair commands. sfc /scannow and dism /online /cleanup-image /restorehealth
 

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Solution
brkkab

brkkab

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Thread Author #10
I ran sfc /scannow Friday in Safe Mode. It didn't find any errors. I'll try the dism command now.
 

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brkkab

brkkab

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Thread Author #11
Here's a screenshot. Cortana still doesn't work.
An image from 'Windows 10 1607 14393.351 Cortana Issues'. Windows Command Prompt shows successful DISM restore and SFC scan with no integrity violations.
 

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