If you get an error that contains 30094 when you try to install Microsoft 365, here are some things you can try to fix the problem. We’ve listed the most common solutions first, so try them in order.
1 - Make sure your device supports SHA-2 certificates (For Windows 7 only)
If you're using Office on a device running Windows 7, make sure your Windows 7 device supports SHA-2 certificates. The SHA-2 code signing support update should have been automatically downloaded and installed on your PC unless Windows automatic updates is disabled.
If you’re getting this error, make sure you have the latest Windows 7 updates installed and then try installing Office again.
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Select Start > Control Panel > System and Security > Windows Update.
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In the Windows Update window, select either Important updates are available or Optional updates are available.
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Select Install Updates.
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Restart your device. Repeat these steps until there are no available updates to install.
Note: IT Professionals who need additional details about this update, should also see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS.
Note: Support for Windows 7 will end on January 14, 2020. Learn more about how this might impact your version of Office in, Windows 7 end of support and Office.
2 - Delete your temporary files
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Use Disk Cleanup to delete your temporary files:
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After Disk Cleanup finishes, start the Office install again. See, Install Office on your PC or Mac and follow the steps for your Office plan.
3 - Repair Office from the Control Panel
The steps to access the repair tool vary depending on your operating system. Choose your operating system from the options below.
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Right-click the Start button
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Select the Microsoft Office product you want to repair and select Modify. If you don't see any options, select the three dots on the right side.
Note: This will repair the entire Office suite even if it's just one application you want to repair such as Word or Excel. If you have a standalone app installed, then search for that application by name.
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Depending on if your copy of Office is Click-to-run or MSI-based install, you'll see the following options to proceed with the repair. Follow the steps for your installation type.
Click-to-run
In the window How would you like to repair your Office Programs, select Online Repair > Repair to make sure everything gets fixed. (The faster Quick Repair option is also available, but it only detects and then replaces corrupted files.)
MSI-based
In Change your installation, select Repair and then click Continue.
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Follow the instructions on the screen to complete the repair.
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Right-click the Start button
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From Category view, under Programs, select Uninstall a program.
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Right-click the Microsoft Office product you want to repair, and from the drop-down, select Change.
Note: If you have a suite such as Microsoft 365 Family, Office Home & Student 2016, or Office Home and Student 2013, search for the suite name, even if it's just a particular application you want to repair such as Word or Excel. If you have a standalone application such as Word or Excel, search for the application name.
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Depending if your copy of Office is Click-to-run or an MSI-based install, do the following for your Office installation type:
Click-to-Run installation type:
In How would you like to repair your Office Programs, select Online Repair to make sure everything gets fixed, and then select Repair. (The faster Quick Repair option is also available, but it only detects and then replaces corrupted files.)
MSI-based installation type:
In Change your installation, select Repair and then click Continue.
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Follow the remaining instructions on the screen to complete the repair.
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Click the Start button
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From Category view, under Programs, select Uninstall a program.
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Click the Office product you want to repair, and then click Change.
Note: If you have a suite such as Microsoft 365 Family, Office Home & Student 2016, or Office Home and Student 2013, search for the suite name, even if it's just a particular application you want to repair such as Word or Excel. If you have a standalone application such as Word or Excel, search for the application name.
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Depending if your copy of Office is Click-to-run or an MSI-based install, do the following for your Office installation type:
Click-to-Run installation type:
In How would you like to repair your Office Programs, select Online Repair to make sure everything gets fixed, and then select Repair. (The faster Quick Repair option is also available, but it only detects and then replaces corrupted files.)
MSI-based installation type:
In Change your installation, select Repair and then click Continue.
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Follow the remaining instructions on the screen to complete the repair.
4 - Uninstall and reinstall Office
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.
