How To

How to Fix “Critical Error – Start Menu and Cortana Aren’t Working”

If you are facing the issue of windows 10 critical error start menu and Cortana is not working then probably you have updated your windows and since then facing the error. Sometimes updating windows 10 takes you to this phase where you are no longer able to log in to the Windows and it becomes inaccessible.

Critical Error Start Menu and Cortana Aren't Working

It is normal to see this kind of errors as there are always chances to get several system, update, software, hardware, and other errors when you are on Windows 10. There is nothing to worry about because there is an effective solution to fix “critical error start menu and Cortana isn’t working” problem.

Also check: DNS_PROBE_FINISHED_NXDOMAIN in Chrome for Windows

Steps on Fixing Windows 10 Start Menu and Cortana Not Working

So, you are at the right place because I’m going to show you some possible ways to fix “critical error start menu and Cortana if this is the issue that is giving you trouble. Let’s go ahead and read the complete article, you can also bookmark the page for future uses or if any of your friends need this issue to be fixed.

#1 Enable Safe Mode on Your Windows Device

You don’t take any worries and just follow these simple steps on how to set your PC in safe mode:

  • Get your PC and start windows 10. Now you need to press a combination of two keys.
  • Press Windows Key and L together, and it will show you a new screen.
  • You see some options, but you need to click the Power button that is in the bottom right corner of the screen.
  • By holding Shift key take your mouse click on Restart and let the device take action.
  • Now after restarting you see some options where you need to choose Troubleshoot.
  • Go to Advanced and click on Settings.
  • One more time click that restart button and just go with the flow.
  • Your device restarts the second time so just press the F5 button, and you will be in safe mode networking.
  • The last step is to restart your device one more time.

Enable Safe Mode on Your Windows

Now, you can see changes and if the error has gone away. If you are still dealing with the issue, then get to the second method and fix windows 10 critical error.

#2 Let’s Try Uninstalling Your Antivirus

Sometimes it’s just your antivirus that is causing the trouble. So you can try uninstalling or disabling it for a few minutes and then try that error again if it exists. Well, it’s really easy to uninstall or disable your antivirus software, just focus here:

  • Go to your windows and get the Run box by searching it or just press Windows key and R.
  • You see a dialog box with the label ‘Run.’ Here you need to type or paste this text “appwiz.cpl” and hit enter.
  • This command automatically opens up the control panel and the section of programs and features. You can see all the software installed on your PC.

control panel programs and features

  • Now just search your antivirus software and hit uninstall, by following all the instructions you can easily get it off of your PC.

After doing so, you can try that error once again if it occurs. If you do not wish to uninstall your antivirus, you can disable it for a little time and check that error back because I know install it again takes a lot of time. So for disabling the antivirus here are the steps:

  • Check your taskbar and look for your antivirus icon.
  • Right-click on the icon and see something like ‘Shield Control’ and hover your mouse over that.
  • Now you should see some options like Diablo for 10 minutes, 1 hour or permanently.
  • You can choose disabled for 10 minutes and check that error again.

Every antivirus has a somewhat same process of getting disabled; I described you the Avast disabling process.

#3 End Security Authority Process via Taskbar

In order to fix “windows 10 start menu critical error” the next method requires you to disable the Local Security Authority Process.

  • Just get your windows on and open the taskbar or just press the keys Ctrl + Shift + Esc all at a time.
  • You can now see the taskbar launched on the screen. Here you see some tabs and choose the Processes tab.
  • It shows a list of processes, and you need to find a method named ‘Local Security Authority Process.’
  • When You do right click on the process, you see an option ‘End task’ so just click on that, and the process will be ended.
  • Now you can close the taskbar and restart the device.

End Security Authority Process via Taskbar

After restarting your PC or whatever, check for the error again if it is removed or not. If not, then do not panic because the next method is waiting for you.

#4 Try Disabling Internet Explorer

To get rid of windows 10 error log you can also try disabling your explorer browser and for doing it just follow these steps:

  • Start your device and get to the main screen.
  • Get the Run dialog box by just pressing the Windows key and R.
  • In the dialog box just paste the text ‘appwiz.cpl’, and it will take you to the programs and features in the control panel.
  • Now, in the left sidebar, you see ‘ Turn Windows features on or off’ and click on this.-
  • It will show you a list of programs or apps running.
  • Just find the Internet Explorer and uncheck the box. Press OK or Yes when prompted.
  • As a final step, restart your PC and check the error status again.

Turn Windows features on or off'

If it persists, then no worries just go on to the next step.

#5 Use Powershell to Fix the Error

It’s another effective tip to fix “start menu and Cortana aren’t working windows 10” that is very easy if you follow the mentioned steps.

  • Open task manager either manually or press CTRL + ALT + DELETE simultaneously.
  • In the upper left corner, you see FIle, click on it and then click Run New Task.
  • In the box, type PowerShell and hit enter.
  • You see the PowerShell on the screen, right click on it and then go to the option ‘run as administrator.’
  • In the next step take this text from here and paste it in the command prompt: Get-AppXPackage -AllUsers | For each {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\AppXManifest.xml”}. Then just hit the enter key and let the command takes its time.
  • Lastly, restart your PC and see the error once again if it is gone by now.

#6 Use Command Prompts To Eliminate the Error

  • Get the Command Prompt dialog box either by searching on your PC or just press windows key and R. In the Run box type CMD and hit enter.
  • Now, in the black space, you need to paste this content ‘%windir%\System32\AppLocker\Plugin*.* *.back’ and hit enter. Do not include the quotation marks.
  • As the last step, you need to restart your PC and check the error existence.

#7 Perform System File Checker Scan

If any of the tips mentioned above are not working for you then as the last step you can perform the System File Checker Scan – Find here. It automatically removes any corrupted or malfunctioning files and recovers the damage.


I hope you would find your solution to fix “critical error start menu and Cortana aren’t working” from any of these seven solutions. Don’t forget to share your experience with trying all these errors and comment about the tip that worked for you.

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