https://wccftech.com/and-it-begins-all-the-windows-10-version-2004-known-issues-list/

Microsoft released Windows 10 May 2020 Update, version 2004, after over a year of internal and Insider testing. While the final builds of Windows 10 version 2004 weren't showing any major bugs, the Windows maker has now released quite a long list of known issues that are plaguing the latest version of the operating system.

Due to these issues, Microsoft is putting compatibility hold on Windows 10 devices that may be affected by these bugs. The company has also advised not to manually install the update using the Update Now button or the Media Creation Tool until the issue that affects your particular machine has been addressed.