A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
A 404 FILE NOT FOUND error in SharePoint usually means the site or page was deleted, moved, or its URL changed.
If administrative access is available, use this recovery path:
- Open Deleted sites in the SharePoint admin center.
- Find the deleted site.
- Select the site, then select Restore.
Important details:
- Deleted SharePoint sites are retained for 93 days. After 93 days, the site and its content are permanently deleted.
- If the site URL was changed, SharePoint should create a redirect page.
- A 404 can also occur if a redirect was removed.
- If the missing content is a document library rather than the whole site, open the library and use Settings > Restore this library to roll the library back to an earlier point in time. This restores the library to the state before the selected activity. This can overwrite newer changes, so review the activity list carefully before restoring.
If the missing link is for a site, restore the deleted site from Deleted sites. If the missing link is for files in a library, use Restore this library.