Office is taking 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.

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.

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.

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

How you use the offline installer depends on which Office product you have. See Office for home and Office for business plans and then select from the table below.

Office product

Do this

Your Office product is under Office for home

Use the Office 2016 offline installer

Your Office product is under Office for business

Contact your admin.

If you're the admin, you can Contact Office 365 for business support for help.

Admins can also use the Office Deployment Tool to download the Office software to your local network. You can then deploy Office by using the software deployment method you typically use.

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

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.

  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.

  1. Go to the 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.

  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.

  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.

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

  1. Click this easy fix button to uninstall Office.

    Easy fix download button indicating an automated fix is available
  2. Select your browser from the drop-down list to see the remaining steps.

    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.

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

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

    3. After restarting your computer, you can try installing Office again.

    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.

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

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

    3. After restarting your computer, you can try installing Office again.

    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.

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

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

    3. After restarting your computer, you can try installing Office again.

  3. To reinstall Office, see Install Office on your PC or Mac and follow the steps for your Office plan.

Office hangs or freezes at 90%

If your Office installation hangs or freezes at the 90% mark as shown in the screen capture below, this could be because the Windows Installer is busy. For a possible solution, see Installation of Office 2016 or Office 2013 hangs at 90%.

Dialog showing installation of Office stuck at 90%
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