When a site collection has been deleted either via the GUI or via PowerShell the Site Collection is then stored for 90
days in A recycle Bin giving an opportunity for Site collection restoration.
So what does this look like, where can I find it and how do I restore a once deleted site collection
- Log in to your tenants Admin Center (http://yoursite-admin.sharepoint.com)
- On the SharePoint Ribbon Click Recycle Bin
You will see a list of all the Site Collections that can be restored , select the site collection you would like to restore and click Restore Deleted Items
- You will receive a confirmation dialog to confirm the restore, click Restore
The Site collection will now begin to restore you will be redirected back to the Admin Centre – Site Collection page and will notice the site collection in question will be back available – it will be greyed out until it has been provisioned once more.
Once the Site Collection is active you can continue using the Site Collection as you once did!