Why do some applications need the computer to restart to apply updates and others don’t?

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Why do some applications need the computer to restart to apply updates and others don’t?

In: Technology

Most common reason is the file is in use by the operating system at the time. Windows will set the updated files to copy in before those services start on reboot. Some services can simply be stopped or are not currently in use so you can copy those files in while windows is running.

There are multiple reasons for it.

A very common one is because when an application starts it will read some values from a file and set itself up accordingly. When you update those files the application doesn’t necessary know that they changed so it needs to be restarted to read them again.

This is why applications themselves restart after an update. However, sometimes things are not as straight forward because there might be multiple apps running in the background that use those files, and even applications that depend on said apps.

So it’s easier and safer to just restart the whole computer.