You may notice a change in the look and navigation of your document libraries and lists. This new experience is faster, has additional phone and tablet features, and simpler navigation. As a document library or list owner or site owner, you may want to switch the default experience back to the previous (classic experience) for a time. Keep in mind that users can change the experience in specific libraries or sites back to new if they choose. A change to settings at the library and list level overrides changes at the site, site collection, and tenant level.
Note: This article is for library and list owners who want to change the default experience for users. If you are an individual user and you want to return to classic experience, click Return to classic SharePoint in the bottom, left corner of the page. To exit the classic experience, click Exit classic experience in the bottom, left corner of the page.
If you're a global or SharePoint admin in your organization, see Change the default list and library experience.
Change the experience for a list or document library
In your list or document library, choose Settings and then List settings or Library settings.
If you don't see Settings , choose the Library or List tab to open the ribbon, and then click Library Settings or List Settings on the ribbon.
Click Advanced settings and then scroll down to List experience.
Choose one of the following:
Default experience set by my administrator
This option sets the experience as whatever your site administrator set.
This option sets the experience to the new experience. This experience is on by default, so you would choose it only if you are switching back from classic.
This option sets the experience to classic, which is the previous, older experience for document libraries.