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Windows 10 Critical Error for Start Menu, Cortana fixed

While the Windows 10 launch has been a smooth one for many users, others are complaining that they are getting Window 10 Critical Error messages relating to the Start Menu and Cortana.

If you have been using the new software heavily since launch, you may have encountered this issue yourself – specifically a message which reads “Windows 10 Critical Error Start Menu and Cortana aren’t working”.

We know that many of you have been seeing this exact error, along with other Windows 10 error codes such as Windows 10 error 27850, Windows 10 error code 0xc004c003 and also a Windows 10 update error 80240020.

The good news is that Microsoft are already aware of the main issue involving the Start Menu and Cortana error in Windows 10.


There has been a detailed reply from a Microsoft representative, providing a Windows 10 Critical Error for Start Menu, Cortana error fix which you can start trying.

Microsoft advises affected users to go into Safe Mode by holding down the Shift key while you press the Power icon and select Restart.

Alternatively if that doesn’t work you can also go one step further and create your own Windows 10 dump file, which Microsoft says will help them significantly in determining the exact problem.

Details of both methods are found in the link above. Read through that and let us know your experiences. Have you been getting any of the error codes mentioned above and how often do you see them on your computer?

Written by Alan Ng

Alan has been working for Product-Reviews since 2009 and became the Editor-in-chief in 2014. He has a passion for technology, the latest mobile phones and gadgets, and the gaming industry. Alan is a graduate of Canterbury Christ Church University and completed a B.A in Commercial Music in 2008. While expressing a keen interest in all areas that PR cover, you'll usually find Alan in the gaming section, where he'll be keeping enthusiasts up to date on all the latest news and reviews for consoles and PC.

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RRZMichael HuttingWendyJane EmsleyWarren G Recent comment authors
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I just restart when I get the error. I find the error usually occurs when I have to right click to shut down and the Start Menu is not working though links on my Task Bar do. It’s inconvienent, but I’m able to use my computer.


I received the critical issue error this morning. It closes the computer and so I can’t use it. Since I use my computer to earn a living, this is a critical problem for me. I will try the fixes suggested in this article. Thanks.

Jane Emsley
Jane Emsley

I got this Critical Error message but, the following day, it began working when my son ‘Restarted’ the computer. However, yesterday the ‘Start-up’ menu reverted to Windows 7. How do I get the Windows 10 back, I really liked it?!
P.S. My son has since gone back home so I don’t have an expert to help me!!!

Warren G
Warren G

I encountered this problem this morning after running the Windows 10 Technical Preview with no problems, then installing the final on July 29th.

I tried a couple different fixes earlier today which required accessing Powershell in the Command Line as an administrator. These fixes did not work… I’m about to try the Safe Mode “fix” described above… I’ll keep you posted.

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