As usual, you are advised to follow the solutions given in the same order as provided. You can fix your problem by applying the solutions below. In such a case, you will need to repair your installation. A corrupt installation can also cause the problem. According to some users, the problem appeared after upgrading their system to Windows 10 while for some, updating Windows 10 turned out to be the cause. In this case, you will need to remove the add-ins. In some cases, supplements can be the cause of the problem. Well, according to the reports submitted by users, the problem is often due to the following factors: Why Microsoft Word Won’t Open On Windows 10 ?