Other programs running in the background prevents Word for Mac working properly.However, the issue cannot be solved so easily if the sources of the problem are: Sometimes the error is gone once users open the document again. Microsoft Word has encountered a problem and needs to close. Due to the error message, users are unable to use Word for Mac program. The “Microsoft Word has encountered a problem and needs to close” error most likely to occur on Mac 2011 and Mac 2008 versions when a user tries to open needed document. To repair damaged system, you have to purchase the licensed version of Mac Washing Machine X9 Mac Washing Machine X9.