It was quite a relief to see the Cloud integration feature rolled out in the current version of Office – Microsoft Office 2013. What disappointed users, however, was the fact that apart from OneDrive, there was no support for other competing cloud services like Dropbox, Google Drive, etc. Fortunately, I came across a tweak that allows you to complete this task effortlessly and lets you add Dropbox to Office 2013/2016. It requires no modifications in registry settings – just a click to download a batch file, followed by some relatively easy steps to run the file.
Add Dropbox to Office
The steps highlighted below will allow you to add any third-party cloud storage services such as Dropbox to Microsoft Office. Also, for the script to work properly, you are required to be logged into Office. You can notice your account pic and details in the upper right corner of Office 2013 program you are using.
Download the script. After that, browse to its location and double-click on it. When prompted, press any key to continue. Note: When you download the script it will probably be flagged as a ‘Potentially harmful application’. Here, simply, ignore the warning and decide to keep it on your computer instead of discarding it.
Once downloaded, double click the executive file. It will open a command prompt on your Windows computer. It should look like the one shown in the screenshot below.
Later, add the path name of your Dropbox folder, e.g. C:\Users\username\Dropbox
Following this, the script should single-handedly complete the task of making the Dropbox available for your Office interface. The script is the updated version for Windows 8.1 and Microsoft Office 2013.
Finally, there’s some manual intervention required to add the Dropbox service to your Office installation. For this, open the Account options and look under Connected Services –> Add a Service -> Storage.
Select Dropbox. Wait for a while to find that the Dropbox has been added under the ‘Connected Services’.
Source: Dropbox Forums.