Windows 10 button in bottom left corner of screen will not open

Hi Clay,

You may run the Deployment Image Servicing and Management (DISM) tool which fixes the Windows corruption error if there are any. Follow the steps: 

1. Press Windows+X.
2. Click on Command Prompt (Admin).
3. Type the command DISM.exe /Online /Cleanup-image /Restorehealth and hit Enter.

System File Checker is a utility in Windows that allows users to scan for corruptions in Windows system files and restore corrupted files.

You can follow the steps in the following article:
http://answers.microsoft.com/en-us/windows/wiki/windows_other-system/system-file-check-sfc-scan-and-repair-system-files/bc609315-da1f-4775-812c-695b60477a93

Please update us with the status. We will be glad to assist you.

"I click on the Windows button in the bottom left corner of the screen but it doesnt do anything. Also I cant change Microsoft Accounts on my computer, it will not allow me. Also the Xbox app says, "error, we cant sign you in right now". Please help me with all these problems!" 

I am having the same problem after the new Windows 10 Creators update was installed.  I left click the app icon in the lower left corner and nothing happens.  I can not pull up all my installed apps.  I can right click and I get a pop up menu of various things.  Also, I get nothing when I click the Cortana search bar.....will not turn white so I can type in a search item?????

Windows button will not work, it just shows its loading?

Also I just purchased windows after mine expired and need to know if I have to install word or should it be there?

I also had the same problem and followed your instructions. After running DISM.exe as above, I received the following message:

Error: 4448

The WOF driver encountered a corruption in the compressed file's Resource Table.

The DISM log file can be found at C:\WINDOWS\Logs\DISM\dism.log

What should I do now please?