Microsoft has just released a patch update on Windows 10 versions 1903 and 1909 with package KB4556799. This update was released on Tuesday, December 15. Patch KB4556799 is designed to improve the security of Internet Explorer and Microsoft Edge browsers, the use of Microsoft Xbox and Microsoft Office suites, etc. The update brings a number of new features and improvements to the operating system but brings some serious twists to users.

This is not the first time that Microsoft’s updates have caused serious errors, 1 month ago Windows also had errors causing errors. slow internet connection on the user’s computer.

Windows 10 patch KB4556799 has a bug that loses audio and user data

Error due to Windows Update detected by Windows Latest, it looks like package KB4556799 is causing sound issues and temporary data loss for some users. According to Reddit, Microsoft forums, and Feedback Hub, users are experiencing issues with the audio driver configuration, an error that causes the automatic removal of pre-installed audio drivers in Windows. It looks like the problem can be fixed by disabling audio enhancements and reinstalling the Realtek Driver.

Audio problems are not the only problem causing Windows 10 users. According to information on Microsoft’s forums, users are also experiencing data loss problems due to the update package KB4556799. Because Microsoft loads a temporary profile in updates, and this profile overwrites the default user profile. This has happened in some previous updates but Microsoft has not yet responded to this issue. Some users have confirmed that restarting the computer about six to eight times after updating reloads the default profile and restores all user information including the Desktop interface.

The good news is that user profiles and data, including settings and files, are not actually deleted. The thing is that the system settings have returned to the original default look. User files cannot be seen while Windows is loaded with a new temporary profile.

Fixes for data loss due to patch update KB4556799 on Windows 10

If you boot up Windows 10 and see the request to reset the User User. After completing the steps, the Desktop is empty, like reinstalling Windows, maybe this is a Windows Update error. Please try to do one of the following two ways:

Method 1: Do not do anything more on Windows. Click the Restart button to restart the computer. If you are lucky, you will restore the data to its original state.

Method 2: If the above method does not solve the problem, you can go to Settings>Update and Security>View Update History>Uninstall updates. Uninstall the most recent updates. Once done, AnonyViet recommends you go back to Update settings and pause the update to make sure problematic updates are not downloaded again. Then wait a few days for Microsoft to release a new update.