Why is Office taking so long to install?

If you get this error message, Sorry it looks like you're on a slow connection…, or Office is taking a really long time to install or it appears to hang during the install, you may want to cancel the installation and then try using some of the following procedures.

Note: Do you have an HP 4500 or HP 8500 OfficeJet printer and are installing Office or Office 365? If so, stop the spooler service before you start installing Office again.

For possible solutions, select from below what type of computer you're trying to install Office on.

Are you trying to install Office on a Mac?

If you're trying to install Office on a Mac, follow the steps in Uninstall Office 2011 from a Mac or Uninstall Office 2016 for Mac, and then restart the Office installation.

Are you trying to install Office on a PC (desktop, laptop, or 2-in-1)?

Try these possible solutions in the order listed.

Restart your computer and check if Office installed

The Office installation may have completed. So, after you've restarted your computer, go to Can't find Office applications in Windows 10, Windows 8, or Windows 7? to see if Office actually did install.

Use a wired connection

If Office did not install, try to reinstall after switching to a wired connection. This can help speed up the installation because a wired connection is usually faster than a wireless one. After that, restart the Office installation.

Install Office using the offline installer

Note: If you use Office 365 for business, contact your admin if you believe you need to use an offline installer to install Office. If you're the admin Contact Office 365 for business support - Admin Help.

The Office offline installer may help bypass potential proxy, firewall, antivirus, or Internet connection issues that might occur during an Office 2016 installation.

See Use the Office 2016 offline installer and select the offline installer for your Office version. Follow the steps for either Office 365 Home, Personal, or University, or for a one-time purchase of Office such as Office Home & Student or Office Home & Business.

If Office still isn't installing, try some of the options below.

Temporarily turn off antivirus software

For information about how to turn off your antivirus software, check your antivirus manufacturer's website. Uninstalling your antivirus software may also help. Don't forget to reinstall it after Office is finished installing and if you turned it off, be sure to turn it on again.

If you're not sure which antivirus software you have, use the following instructions to get to Control Panel to find the name of your antivirus software.

Tip: Windows 10 comes with default antivirus software, Windows Defender. If you determine that you're using it, select the Start button > Settings > Update & Security, and then select Windows Defender on the left. Slide the button to Off. Remember to turn it On again.

Windows 10
  1. Go to Control Panel by right-clicking the Start button Windows Start button in Windows 8 and Windows 10 (lower-left corner), and choosing Control Panel.

    Options and commands list see after pressing Windows logo key + X

  2. Do one of the following:

    • In Category view, select System and Security > Security and Maintenance, and then select the down arrow next to Security.

    • In Large icons or Small icons view, select Security and Maintenance, and then select the down arrow next to Security.

    If Windows can detect your antivirus software, it's listed under Virus protection.

Windows 8.1
  1. Go to Control Panel by right-clicking the Start button Windows Start button in Windows 8 and Windows 10 (lower-left corner), and choosing Control Panel.

    Options and commands list see after pressing Windows logo key + X

  2. Do one of the following

    • In Category view, select System and Security > Action Center, and then select the down arrow next to Security.

    • In Large icons or Small icons view, select Action Center, and then select the down arrow next to Security.

    If Windows can detect your antivirus software, it's listed under Virus protection.

Windows 7
  1. Go to Control Panel by choosing the Start button Windows 7 Start button (lower-left corner), and choosing Control Panel.

  2. Do one of the following

    • In Category view, select System and Security > Action Center, and then select the down arrow next to Security.

    • In Large icons or Small icons view, select Action Center, and then select the down arrow next to Security.

    If Windows can detect your antivirus software, it's listed under Virus protection.

Run online repair from Control Panel

  1. Open Control Panel, and select Programs and Features.

  2. In the Uninstall or change a program window, from the list find and select the Microsoft Office product you're trying to install.

  3. Tap or click Change, select Online Repair.

Remove and reinstall Office

Completely remove Office using the easy fix tool and then reinstall it.

  1. Click this easy fix button to uninstall and completely clean up your Office installation.

    Easy fix download button indicating an automated fix is available
  2. When prompted, follow the steps specific to your browser to open the tool.

    Browser

    Do this

    Internet Explorer

    At the bottom of the browser window, select Open to open the O15CTRRemove.diagcab file.

    Select Open to open the O15CTRRemove.diagcab easy fix tool

    If the file doesn’t open automatically, choose Save > Open Folder, and then double-click the file (it should start with "O15CTRRemove") to run the easy fix tool.

    Proceed to step 3.

    Chrome

    In the lower-lower left corner select the o15CTRRemove file and from the drop down, select Show in folder.

    From the dropdown, select Show in folder

    Double-click the download, o15CTRRemove to run the easy fix tool.

    Proceed to step 3.

    Firefox

    Select Save File, and then OK.

    Save O15CTRRemove.diagcab file in Firefox

    In the upper-right browser window, select Show all downloads. In the Library, select Downloads > O15CTRRemove.digicab, and then select the folder icon. Double-click the O15CTRRemove.digicab.

    Proceed to step 3.

  3. The Uninstall Microsoft Office wizard launches. Select Next and follow the prompts.

  4. When you see the Uninstallation successful screen, follow the prompt to restart your computer for the changes to take effect. Select Next.

  5. After restarting your computer, install Office again.

    For information about signing in to install or reinstall Office, see How to install Office. Complete the steps specific to your version.

    Note: If you’re having trouble signing in, check that you’re using the correct email and password. If you still can’t sign in you may be using a different Office 365 service and have a different sign in location. See Where to sign in to Office 365.

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