A family of Microsoft word processing software products for creating web, email, and print documents.
For the original problem discussed in this thread there is a workaround that someone came up with: turn off background saving.
You seem to be describing general issues with Office 2013. For troubleshooting, take a look at http://answers.microsoft.com/en-us/office/forum/office_2013_release-word/unable-to-open-word-or-excel-2013-files/6f489bd3-404e-4987-942a-c7ceb4634d33?msgId=904d34bc-1ffc-4367-a2d2-d4376e331de4.