What to Do When Office is Taking Too Long to Install
If you get this error message: Sorry, it looks like you're on a slow connection, or Office is taking a long time to install, or it appears to hang during the install, you may want to cancel the installation and try using some of the following procedures:
Restart your computer and check to see if Office is installed
The Office installation may have completed. Restart your computer and go to Can’t find Office applications in Windows 10, Windows 8, or Windows 7 to see if Office did install.
Use a wired connection
If Office did not install,reinstall after switching to a wired connection. This can help speed up the installation because a wired connection is typically faster than a wireless one. Restart the Office installation.
Turn off anti-virus
For information about turning off your antivirus software, visit your antivirus manufacturer’s website. Uninstalling your antivirus software may also help. Don’t forget to reinstall it after Office is finished installing. Windows 10 comes with default antivirus software, Windows Defender. If you’re using it, select the Start button > Settings > Update & Security, then select Windows Defender on the left. Slide the button to Off. Turn it on once installation is complete.
Run online repair from Control Panel
Open Control Panel and select Programs and Features. In the Uninstall or change a program window, find and select the Office product you’re trying to install. Tap or click Change, select Online Repair.
TIP: When all else fails, uninstall Office and reinstall Office. This often fixes the issue.
If Office freezes or hangs at 90% and you see the message below, the installer may be busy. See installation of Office 2016 or Office 2013 hangs at 90% for a solution.