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You can do this by SharePoint designer. If that doesn’t work, try resetting the root site to its site definition from SharePoint designer. Or else if your account has MSFT support, raise a ticket and they can restore the site to its previous version based on their recent backup.
Go to SharePoint Designer, from advanced edit window select style tab….However, fix that worked:
- copy all the data from the page,
- click on the link in the warning in order to revert to original template. That clears the warning.
- paste the data back in.
How do I restore a subsite?
To restore a deleted subsite in SharePoint, follow these steps:
- Login to SharePoint Online Site collection as a site collection administrator.
- Navigate to Site Settings >> Click on “Recycle bin” under site collection administration.
- Click on the “Restore” button in the ribbon to start restoring the subsite.
If you have a custom page, try editing the page in SharePoint Designer which makes the page “unghosted”. Then click reset to site definition, and it will remove the changes you did from sharepoint designer.
A Site Definition is a bunch of files on the Web server that define a unique type of SharePoint site. When you create a new site it is based on a site definition. Let’s say you customize a page but then don’t like the way it looks. You can reset the page to the site definition,…
Can a page be reset to the site definition?
Only the existing pages which are defined in the site definition can be reset to site definition, such as default.aspx, default list item form pages and default master pages.
If that doesn’t work, try resetting the root site to its site definition from SharePoint designer. Or else if your account has MSFT support, raise a ticket and they can restore the site to its previous version based on their recent backup. Firstly there is no way to reset a site in the way you are referring to or need to sadly.