Upgrading your Windows system offers a number of significant benefits specifically enhancing performance and enjoying advanced features. However, it is crucial to note that not all system configurations are compatible with Windows operating systems. If minimum requirements are not met, it will result in errors.
Installing Windows 11 operating system upgrade in your PC without meeting minimum requirements will result in error code 0xC1900200 – 0x20008.
Troubleshooting Methods to Help Fix Windows 11 Upgrade Installation Error Code 0xC1900200 – 0x20008

If you are unable to install the latest Windows 11 update on your device and encounter the error code mentioned above, here are possible fixes you might want to try.
Meet All System Requirements to Install Windows 11 Operating System
Windows 11 requires 1GHz or faster processor with 2 or more cores on compatible 64-bit compressor or SoC, 4GB RAM, 64 GB or larger storage, UEFI system firmware Secure Boot capable, TPM version 2.0, DirecX 12 or later with WDDM 2.0 driver and 720p display with 8 bits per color channel and greater than 9” diagonally.
Reset the Windows Update Cache or Components

Launch first the Run dialog box and type cmd. Next, press Ctrl + Shift + Enter. This will open the elevated Command Prompt. Click Yes to access admin privileges.
Now, type net stop wuauserv and press enter. Type net stop crypt and press enter. Type Svcnet stop bits and press enter. Lastly, type net stop msiserver and press Enter.
Next, type ren C:\Windows\SoftwareDistribution SoftwareDistribution.old and press Enter. Type ren C:\Windows\System32\catroot2 Catroot2.oldcopied to clipboardcopied to clipboard and press Enter.
Lastly, type net start wuauserv and press Enter. Type net start cryptSvc and press Enter. Type net start bits and press Enter. And type net start msiserver and press Enter.
Lastly, you may restart or reboot your PC for the changes to take effect.
Enable TPM and Secure Boot
Launch the Settings menu and go to Update & Security. Head over to Recovery and click Restart Now. Go to Troubleshoot. Click Advanced options and select UEFI Firmware Settings. Click the Restart button. Now, turn on TPM and Secure Boot.
In Closing
If you are unable to fix the Windows installation upgrade glitch with the methods above but have met the minimum system requirements, it is best to seek support from Microsoft customer service to help you specifically address the issue.