If Word is acting underhand and abnormal, it may be necessary to reset it. Although Microsoft does not provide a reset button to return user options and registry settings from Word to default values, two fairly simple solutions are available.
Running the Microsoft Easy Repair Wizard
The first (and simplest) solution is to run the Microsoft Easy Fix wizard, which automatically resets the user options and registry settings of Word. To find the assistant, go to the "Here's an easy solution" section of the Microsoft Troubleshooting Page. Select "Download" and when finished, open the application.
Note that all Office applications must be closed for the wizard to work.
The Easy Fix window will appear. Read the basic information and select "Next".
Let the wizard run its troubleshooting process. When finished, select "Close".
Now the user options and registry settings are reset. The next time you open Word, you will be prompted to run the installation process.
Reset using the utility of the registry editor
Although we recommend the above method, you can manually reset the options and settings in Word with the help of the Registry Editor.
Standard warning: The Registry Editor is a powerful tool that can make it an unstable or even unusable system. It's a pretty simple hack and as long as you stick to the instructions, you should not have any problems. That said, if you've never worked with this before, consider reading about how to use the registry editor before you start And certainly save the registry (and your computer!) before making any changes.
First, press Windows Key + R to open the "Run" window. Then type Regedt32.exe and select "OK".
This opens the utility of the registry editor. Navigate to the location of the key you want to delete. The key appears in the following file path:
HKEY_CURRENT_USER Software Microsoft Office 16.0 Word
Note that "16.0" in the file path may be different depending on the version of Office you are using. If you are using Office 2013, you must search for "15.0". Microsoft provides a complete list of key locations if you need extra help.
Then select the key you want to delete. Once selected, click Edit> Delete.
You will then be asked if you are sure you want to delete the key. Click "Yes" to confirm. then the key will be deleted.
That's all we can say about it. The next time you run Word, it will guide you through the installation process.