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After a latest Windows 10 upgrade users are getting a "Critical Error your Start menu isnt working. We'll try to fix it the next time you sign in." And there is now the only choice to log in. Or Has your Windows 10 Start Menu stopped working, collapsed, or just failed to respond to your click? Here are solutions to solve "critical error your start menu isnt working. We'll try to fix it the next time you sign in." and get the Start Menu back to normal.
Read more about Start Menu issues : https://support.microsoft.com/en-in/help/12385/windows-10-fix-problems-with-start-menu
How to Fix Windows 10 Start Menu Critical Issue? Due to the critical error message, do not hesitate to refresh your computer once or twice, or switch it off and restart straight when you first came across the Windows 10 Start button. This is the safest and fastest way to determine how serious a problem you are getting. But many people aren't fortunate enough to deal with the critical error that happens so easily with the Start menu and Cortana. Next, we have to move on with some general troubleshooting.
Install the Recent Windows 10 Update
As the critical bug prevents the Start Settings option from being accessed, let's go around the Start and get to the location of update.
Step 1: Press the Windows + R key to bring up the Run box on your keyboard, type ms-settings: and click enter.
Step 2: Click Update & Security in the Settings panel and then check for updates. You should navigate to System > About > Version if you are running Windows 10 version 1511. To install the latest update presently accessible on your PC, follow the wizard.
Troubleshoot with diag_StartMenu mode
In order to fix "Critical Error Your Start menu isnt working. We'll try to fix it the next time you sign in.", You should understand that there is always the Start menu problem that follows every update of Windows 10, so you're alone. And Microsoft has created a troubleshooter to assist discover and solve issues with the Start menu at least momentarily. Click the Start Troubleshooter link and run it as directed by the wizard.
Open menu troubleshooter(go to startmenu.diagcab)
Safe mode trick for to quick fix Start Menu
Booting to safe mode seems to work best for error "Critical Error Your Start menu isnt working. We'll try to fix it the next time you sign in." because many Users have noticed that booting to safety mode and then returning into normal mode removes the critical error, although some still say it's a temporary fix.
Step 1. To log out, click Windows Key + L when Windows 10 starts.
Step 2. In the upper right corner, press the "Start" button and hold "Shift" on the keyboard.
Step 3. You should restart your computer to boot your choices now. Go to "Troubleshoot" > "Advanced options" > "Startup Settings". Click the "Restart" button.
Step 4. Once your computer restarts again, click F5 to use Networking to access "Safe Mode."
Step 5.Your issue should be fixed just by entering Safe Mode. You just have to restart your computer right now.
Be aware of your antivirus software, apart from the three particular methods of menu troubleshooting, it is said that antivirus software from third parties unnoticedly generates a critical error from the Start menu. Try deactivating and reinstalling it.
Read more about Start Menu issues : https://support.microsoft.com/en-in/help/12385/windows-10-fix-problems-with-start-menu