You can also try to run built-in tools like System File Checker and the DISM tool. You can try to boot your computer in a Clean Boot State to see if a third-party program is the root cause of the problem. There are several suggestions you can check out to fix the problem. Moreover, there are also other factors that you have to consider such as corruption in the system files as well as errors in the user profile which is generated on a domain network, and so on. This kind of problem might be due to some glitch in the computer, or it could also be caused by some built-in tool or an installed program in your computer.
However, there are instances when you might notice that the Title bar, Maximize, Minimize and Close buttons are missing in the File Explorer. In case you don’t know, the Title bar comes with the Maximize, Minimize, as well as the Close button. What to do if the Title bar, Minimize, Maximize and Close buttons are missing in Windows 10