How to resolve failed install

Use Microsoft’s uninstall troubleshooter to remove the incomplete Office/Outlook installation, and then reinstall the product associated with the Microsoft account used for the 2023 purchase.

Clean out the failed installation

A failed Online Repair can leave Office components behind that prevent another installation.

1. Open Microsoft’s Office uninstall page and select the button for the uninstall troubleshooter.^1^
2. If prompted that the site is trying to open Get Help, select Open.
3. Select the installed Office, Microsoft 365, or Outlook product and complete the removal.
4. Restart when the troubleshooter specifically requests it. This restart completes the cleanup, unlike the restarts already attempted before reinstalling.
5. Check Settings → Apps → Installed apps and confirm that the old Outlook/Office entry is gone.

Removing Office applications does not remove documents or workbooks created with them.^1^

Reinstall the product you purchased

The correct installer depends on whether Outlook was purchased by itself or came with Office/Microsoft 365.

• If Outlook was part of Microsoft 365 or an Office suite: Sign in at https://www.office.com/signin using the same Microsoft account associated with the original purchase, locate the product, and select Install. Microsoft identifies this as the reinstall path for Office for home.^2^
• If Outlook was purchased as a standalone application: Use Microsoft’s classic Outlook installation page, select the required language, select Download, and run the downloaded installer.^3^

Do not install an unrelated edition merely because it is offered on another Microsoft account; use the account and product that show the 2023 purchase.

If installation still reports a connection or space error

The message alone does not prove that the connection or disk is actually at fault. For matching Office errors such as 0-1011, 30088-1015, or 30183-1011, Microsoft recommends clean removal and reinstallation first.^4^

If clean removal does not resolve it:

1. For Microsoft 365 only, use its offline installer. This can bypass installation interference from a proxy, firewall, antivirus product, or Internet path.^4^
2. If a proxy is configured, go to Settings → Network & Internet → Proxy and temporarily disable the configured proxy while installing.
3. If third-party antivirus or firewall software is present, temporarily disable it only for the installation, then turn it back on immediately afterward.
4. Record the installer’s complete numeric error code. The exact code and whether the purchase is standalone Outlook, Office Home & Business, or Microsoft 365 determine the next product-specific action.
5. If the uninstall troubleshooter cannot remove the remaining installation, use the manual uninstall Office option linked from Microsoft’s uninstall instructions.^1^

References

1. [Click-to-Run](https://support.microsoft.com/office/lifecycle/officeinstall/uninstall-microsoft-365-or-office-from-a-pc)
2. [Office for home](https://support.microsoft.com/office/lifecycle/officeinstall/troubleshoot-installing-office)
3. Install or reinstall classic Outlook on a Windows PC | Microsoft Support
4. Error code 0-1011, 30088-1015, or 30183-1011 when installing Office | Microsoft Support