"Couldn't install" message when you install Office 2013 or Office 365"

Resolution

Use Disk Cleanup to clear the system of unwanted space, follow these steps:

In Windows 7

1.       Click Start

2.       Type Disk Cleanup in the search box and then, in the list of results, click Disk Cleanup.

3.       If you see a Drives list, choose the hard disk drive you want to clean, and then click OK.

4.       In the Disk Cleanup dialog box, on the Disk Cleanup tab, choose the files to delete, and then click OK.

5.       In the message that appears, click Delete files.

See a video on how to delete files using Disk Cleanup in Windows 7: Delete files using Disk Cleanup.

In Windows 8

1.       With a mouse, move your pointer into the upper-right or lower-right corner, and then move it up or down to clickSearch.
With touch, swipe in from the right edge, and then tap Search.

2.       Type Disk Cleanup in the search box, and then tap or click Settings.

3.       Tap or click Free up disk space by deleting unnecessary files under results.

4.       If you see a Drives list, choose the hard disk drive you want to clean, and then tap or click OK.

5.       In the Disk Cleanup dialog box, on the Disk Cleanup tab, choose the files to delete, and then tap or click OK.

6.       In the message that appears, tap or click Delete Files.

Once the cleanup is done, please try reinstalling Office. If you still get the same message, move some photos or music to another disk drive so that you can install Office successfully.

If the problem continues to occur, temporarily turn off your antivirus software, firewall, and proxy settings.

Temporarily turn off the antivirus software

Turn off the antivirus software on your computer, install Office, and then turn the antivirus software back on. If you need information on how to turn off your antivirus software, check which software is installed on your computer, and then go to the manufacturer’s website for information. If you do not know which antivirus software is installed on the computer, follow these steps.

In Windows 8 or Windows 8.1

1.       Open Control Panel.

2.       Click System and Security.

3.       Under Action Center, click Review your computer’s status and resolve issues.

4.       Click Security to find the name of the antivirus software.

In Windows 7

1.       Open Control Panel.

2.       Click System and Security.

3.       Under Action Center, click Review your computer’s status.

4.       Click Security to find the name of the antivirus software.

Temporarily turn off the firewall

Turn off the firewall on your computer, install Office, and then turn on the firewall again.

If you need any asisstance

In Windows 8 or 8.1, follow these steps to turn Windows Firewall off and on.

In Windows 7, follow these steps to turn Windows Firewall off and on.

If you are using a firewall from another manufacturer, go to their website for information about how to temporarily disable the firewall.

Temporarily turn off proxy settings

If you use your computer both at home and at work, proxy settings might cause problems when you are installing Office. Try disabling proxy settings in Windows by following these steps:

1.       Go to Control Panel, and open Internet Options.

2.       Click the Connections tab, and then click LAN settings.

3.       If the box next to Use a proxy server for your LAN is selected, clear it.

4.       Install Office.

If the problem continues, contact your IT department at work for additional help. Or, you can try to install Office at work instead of at home.