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.
Note: The steps below change the default experience for everyone. To use the classic experience just for yourself, select Return to classic SharePoint in the bottom, left corner of the page. To exit, select Exit classic 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
The modern experience will be used with a few exceptions.
Change the experience for all lists and libraries on a site
You can activate the site collection feature SharePoint Lists and Libraries experience to set the classic experience as the default for an entire site. Read how to enable or disable site collection features for more information.
When both the site collection feature is active and the List expereince for a list or libary is set to New experience, the new experience will be used.