Check Out / Check In Lots of Files at Once

When you upload or change a document, you are checking the document out to you first, and so in order for those changes to appear, or for other people to be able to open them for editing, you must first perform a check-in.

Sometimes, you have lots and lots of documents, and they all need to be checked in, that is a lot of clicking and button pressing!

There is a way:

If you are a Site Administrator, and the Publishing Feature is turned on:

1. Go into the Document Library or Picture Library where you need to check in multiple files.
2. Select Document Library Settings from Settings
3. Select Manage checked out files under Permissions and Management
4. Select the documents you want to check-in (or select the all checkbox to select them all)
   
5. Go to: [YOUR SITE]/_Layouts/sitemanager.aspx (I wonder if this works without publishing turned on...)
   
6. Select Checked out To Me from View
7. Select the documents you want to check-in (or select the all checkbox to select them all)
8. Select check-in from Actions

If you are not a Site Administrator, you will need to find a Site Administrator to do this for you - which may be worth it if you have hundreds of documents or images to check-in at once.

Also, you must make sure that all of the required fields are not blank. If you are checking in files using the method above, you will not get an error message, or any other notification that check in failed, documents missing the required information simply will not be checked in.