The concept of Libraries was introduced in Windows 7 and it basically acts like a folder which in turn accesses or points to multiple folders. Libraries allows you to manage files like documents, images, videos etc. You can browse your files the same way you would in a folder, or you can view your files arranged by properties like date, type, and author. Libraries like other folders can get corrupted and may not open properly. This could happen because of many reasons, it could even happen due to any third party software install or uninstall.
In such cases, how to repair libraries or restore them back to normal?
If any of the libaray is not opening or throwing errors, then the best way to repair them is to delete them or create new one on similar lines. In case all of the libraries are not working, you can manually delete all of them from the context menu (right click) and then use the restore option to bring them back.
Restore default libraries is an option in Windows 8 (as well as Windows 7) which brings back the default libraries. In case this option isn’t working, delete all the available libraries and follow this method.