The Server Timeout Error like XE000078B code means One Note is having trouble communicating with the web server where your notebook is stored. Most likely, there’s been a server timeout, which occurs when the server is busy and can’t respond to your requests.
Solution for Server Timeout Error :
Firstly, Conflicts with antivirus and firewall
Check if your Antivirus program is blocking any of the programs that are getting installed on your computer. It is always suggested to disable your antivirus before you install any program in your computer.
Secondly, Temporary files and Temporary internet files:
For instant, There might be temporary files and temporary internet files and the junk. Files in your computer which will cause the registry issues and make some services not responsive. These temporary files might cause trouble for the system programs.
It is important for you to optimize and tune up your computer.
Thirdly, Reset Internet Explorer settings
There could be a problem with your web browser which may cause this kind of issue. For instance the temporary Internet files and the Browsing Cache, tools bar, add-ons and the other internet sources might cause the problem for you to perform the online installation. Stop the print spooled.
4. Remove older versions of Office
There could be old office versions running on your computer. It is required for you to uninstall and remove the old office versions before installing the latest Office 2013 or office 365.