You might see these errors if you're having a network connection issue or if your hard drive is running out of space. It's a good idea to free up drive space first before you try to fix the problem. We’ve listed the most common solutions first so try the steps in order, starting with uninstalling and then reinstalling Microsoft 365.
Step 1: Free up space on your hard drive
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For Windows 10, go to Free up drive space on your hard drive.
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For Windows 8/8.1, go to Tips to free up drive space on your PC.
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For Windows 7, go to Strategies for freeing disk space.
Step 2: Try the following solutions in this order
We’ve listed the most common fixes to this error in the order of what is most likely to resolve the issue. Therefore, try each solution in the order it's listed until you're able to install Office.
Tip: Your feedback is very important to us and we use it to help us make improvements to articles like this. So once you're able to install Office, use the buttons at the bottom to let us know which solution helped resolve your issue. If you're still unable to install Office, let us know that too!
Use the uninstall troubleshooter to uninstall Microsoft 365, Office 2021, Office 2019, or Office 2016 from your Windows PC.
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Select the button below to start the uninstall troubleshooter.
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Click Open if you get a pop-up window indicating This site is trying to open Get Help.
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Follow the prompts on the remaining screens and when prompted, restart your computer.
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Select the steps for the version of Office you want to install or reinstall.
Microsoft 365 | Office 2024 | Office 2021 | Office 2019 | Office 2016
Important:
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The uninstall troubleshooter currently can't uninstall Office 2024.
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Run the troubleshooter on the same Windows PC with the Microsoft 365 or Office product you want to uninstall.
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You need to be on Windows 10 or higher to run the troubleshooter.
Tip: If the Microsoft 365 uninstall troubleshooter doesn't completely uninstall Microsoft 365 or Office from your PC, you can try to manually uninstall Office.
The Microsoft 365 offline installer may help bypass potential proxy, firewall, antivirus, or Internet connection issues that might occur during an Microsoft 365 installation.
For steps to install an offline version of Microsoft 365, see Use the Office offline installer and select the correct tab for your version of Office.
If you use your device both at home and at work, try turning off the proxy settings in Microsoft Edge or Internet Explorer before you install Microsoft 365. If you're using a different browser, check their help to find out how to turn off proxy settings.
Microsoft Edge
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Click the Start button
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Select Network & Internet, go to the bottom of the selections on the left side, and click Proxy.
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In Automatic proxy setup, automatically detect settings or use setup script, by sliding to On or Off.
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In Manual proxy setup, you can choose to use a proxy server. Generally, it will be off and if you slide it to On, be sure to select Save. And if it was off by default before you turned it on, be sure to slide back to Off when you've finished using it.
Internet Explorer 7, 8, 9, 10, or 11
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In Internet Explorer, click Tools (upper-right corner) > Internet options.
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Click the Connections tab, and then click the LAN settings button.
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Under Proxy server, clear the option "Use a proxy server for your LAN (These settings will not apply to dial-up or VPN connections)."
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Click Apply and OK to save changes. Restart your computer.
Note: There might be more proxy settings that you need to bypass. If this doesn't work, and you're installing Office from work or school, check with your IT department for more information. For IT administrators, please see Microsoft 365 URLs and IP address ranges.
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.
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On the Start
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Do one of the following:
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In Category view, select System and Security > Security and Maintenance, and then select the down arrow next to Security.
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In Large icons or Small icons view, select Security and Maintenance, and then select the down arrow next to Security.
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If Windows can detect your antivirus software, it's listed under Virus protection.
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Go to the Control Panel by right-clicking the Start button
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Do one of the following:
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In Category view, select System and Security > Action Center, and then select the down arrow next to Security.
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In Large icons or Small icons view, select Action Center, and then select the down arrow next to Security.
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If Windows can detect your antivirus software, it's listed under Virus protection.
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Go to Control Panel by choosing the Start button
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Do one of the following:
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In Category view, select System and Security > Action Center, and then select the down arrow next to Security.
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In Large icons or Small icons view, select Action Center, and then select the down arrow next to Security.
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If Windows can detect your antivirus software, it's listed under Virus protection.
If you're using a firewall from another manufacturer, visit the manufacturer's website for information about how to temporarily disable the firewall. For Windows Firewall, please see below.
Windows 11 and Windows 10
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Please go to Turn Windows Firewall on or off.
Windows 8.1 and 7
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Please scroll to Turn Windows Firewall on or off in Protect my PC from viruses.
Use a wired connection to the Internet, if possible. If this doesn't work, try connecting at a different location, such as a friend's house or a wireless hotspot.
If you're trying to install at work or at school, the network might be limited in a way that won't allow Office to install. Your IT department might be able to help you handle these limitations. If not, you could also take your computer home to install Office. After it's installed, you'll be able to use it at work or school as if you had installed it there.
