I have a client who has two different SharePoint environments (both 2010). In the older environment, when they check out a document and make changes, any time they click on the X to close word they are asked to check the document back in. In the new environment, when they click on the X, it doesn't always prompt them but sometimes does, which means they have often dozens of files that remain checked out to the users.
Here is one source I found that confirms the inconsistent results.
Is there a way to force that prompt on close? Is this a server side setting, or something I should be looking into on Word?