First thing to try is repairing your Office installation. Also, on one of the other computers use the repair function. In Word, use File tab / Open command. In the Open dialog, single click to select the file, then click on the drop down arrow beside the Open button and select "Open and Repair".
I noticed that MS Office Word does not work with DOCX file. I have one document in which i have inserted various changes.
But now i am getting this error message: Check the file permissions for the document or drive.
How can i remove the error or what should I do? Any suggestions ideas would be great.