How to reinstall Steam without deleting games, library categories, save files and local screenshots
304Step-by-step walkthrough:
1. Exit Steam.
2. Head to the Steam Program Files folder, commonly located at C: / ProgramFiles (x86) / Steam.
3. Delete everything within the folder except for Steam.exe, userdata and steamapps.
4. If you have no game save files, local screenshots or any configs like custom library categories or important Steam settings that you care about you can optionally delete the userdata folder as well.
5. Run Steam.exe
6. Wait while Steam downloads the required files and reinstall.
That's it! You're done with your reinstall. Non of your games will be deleted and all your settings will be saved.
NB: If you are opted into the Steam Beta you will need to opt back into it after you reinstall Steam.
Using this method of reinstalling Steam will not delete any of your games or library folders, it will not delete any library categories that you have set, nor will it delete save files, game configs or local screenshots.
This method of reinstalling Steam is the preferred method when reinstalling Steam for things like troubleshooting or to just refresh your Steam installation folder.
If you would like to read along or you just prefer text you can go to the Steam Guide linked below.
This video was created in relation to the following Steam Guide: https://steamcommunity.com/sharedfiles/filedetails/?id=2307584451
Fully uninstalling Steam should never be necessary and is largely a waste of time, unless you actually do want to completely uninstall Steam permanently.