You may also check Disabled in step 6 to have a try.
How to disable “Check for updates” button in Windows 10? Check Group Policy Settings How to fix these problems? Please follow the methods below. Many people are complaining about Windows update missing on their Windows 10 computer: Check for updates button missing, Check for updates button greyed out, or Check for updates button disabled. How to fix it? How to Troubleshoot Windows Could Not Search for New Updates However, the Check for updates button may be missing/disabled/greyed out. That’s all about how to check for Windows updates. How To Recover Lost Files After Windows Update? Wait for the checking process and follow the on-screen instructions to install available updates.Click on the Check for updates button in the right pane.Make sure the Windows Update is selected in the left pane.Scroll down to select Update & Security.