KB5007186 applies to Windows 10 all versions. This brings the OS build to 19043.1348.
- Updates an issue an issue that might prevent subtitles from displaying for certain video apps and streaming video sites.
- Updates an issue that prevents Kana input mode users from inserting a question mark (?) using the Shift-0 key combination.
- Updates an issue that sometimes causes your lock screen background to appear black if you have set up a slideshow of pictures as your lock screen background.
Windows 10 users should upgrade to the current version to be able to have full support. 21H1 is the current version of Windows 10.
Your machine will be rebooted to complete the installation.