Folders or files can't be opened in new window or tab in SharePoint online (office 365)

[Narayan_Khatiwada]

Old team site in SharePoint 2010 has an option to open a document file or folder in a new page or tab, but the new SharePoint online doesn't have that feature. Has Microsoft added that feature now? If not, what is the workaround to enable it? 

Thank you, 

[#2]

AFAIK, there is not a workaround for what you need. It works in the way you have described:
(1) When you click on a folder, the folder opens in the same page
(2) When you click on a file, the file opens on the same tab and it's shown in the Microsoft 365 file viewer

[#3]

Thank you @Juan Carlos González Martín ! 

[#4 · Accepted solution]

Managing files and folders can often be easier when you work outside SharePoint, using Open with Explorer, but rather than use the Open with Explorer command, a better option is to sync your SharePoint files or move or copy files in SharePoint. With Open with Explorer (File Explorer), you can copy and move multiple files and folders between folders as you would on your desktop.

Note: SharePoint Open with Explorer uses ActiveX technology, so it's only supported in Internet Explorer. Open with Explorer doesn't work in Windows with Microsoft Edge, Google Chrome, or Mozilla Firefox, or on the Mac platform.

The ActiveX control is only needed when you're working with files in Windows File Explorer. Once you're done with File Explorer, you can then use any supported browser with SharePoint.

[#5]

Thank you @Smith_J. I appreciate your help.

[#6]

Would like to see the possiblity to choose by checkmark if a link opens on same page or in new tab.