Windows update stucks/hangs and/or windows 10 install stucks/hangs on update From https://answers.microsoft.com/en-us/insider/forum/insider_wintp-insider_update/windows-10-installation-stuck-on-checking-for/971e8400-cd9a-4172-a630-ab1c96754502?auth=1
If you are upgrading your Windows through Windows Updates and you are able to access the desktop, then I suggest you to Manually reset the Windows Updates Components and check if it helps. Resetting Windows Update Components will fix corrupt Windows Update Components and help you to install the Windows Updates. Please follow the below steps to reset the Windows Updates Components: 1. Press Windows Key + X on the keyboard and then select “Command Prompt (Admin)” from the menu. 2. Stop the BITS, Cryptographic, MSI Installer and the Windows Update Services. To do this, type the following commands at a command prompt. Press the “ENTER” key after you type each command. net stop wuauserv net stop cryptSvc net stop bits net stop msiserver 3. Now rename the SoftwareDistribution and Catroot2 folder. You can do this by typing the following commands in the Command Prompt. Press the “ENTER” key after you type each command. ren C:\Windows\SoftwareDistribution SoftwareDistribution.old ren C:\Windows\System32\catroot2 Catroot2.old 4. Now, let’s restart the BITS, Cryptographic, MSI Installer and the Windows Update Services. Type the following commands in the Command Prompt for this. Press the ENTER key after you type each command. net start wuauserv net start cryptSvc net start bits net start msiserver 5. Type Exit in the Command Prompt to close it.