Office 365 - Online Repair locked up at 3% install

Question

Did an End Task and can't restart or reload the Office 365 repair or setup.

Answer 1

Hi, let me help you with this issue.

Press Windows + R

Type: services.msc

Find Windows Installer

Right-click → Restart

Try Office repair again.

Answer 2

Use the following steps to recover from the stuck Online Repair and get Office working again:

1. Restart Windows
   • Because the Online Repair was ended via Task Manager, some Office install processes may still be partially active.
   • Fully restart the computer (not just sign out). This clears any pending installation state.
2. Try repairing Office again from Apps & Features (Windows 10/11)
   • Right-click the Start button.
   • In Windows 11 select Installed apps; in Windows 10 select Apps and Features.
   • Find Microsoft 365 (or Office) in the list.
   • Select it, then choose Modify (or the three dots (…) → Modify).
   • Choose Online Repair → Repair and let it complete. Do not cancel even if it seems slow.
3. If Online Repair will not start or fails again
   • Uninstall Office from Apps & Features / Installed apps or Programs and Features.
   • Restart the computer.
   • Reinstall Microsoft 365/Office from the account or installation source used originally. If the installer reports another installation in progress, restart again and then reinstall as described in the “Restart your computer and reinstall Office” guidance.
4. If installation is still slow or stuck
   • Ensure a stable, preferably wired, internet connection.
   • Optionally use the Office offline installer as described in the “Office is taking long to install” guidance, then run setup again.

These steps reset the interrupted repair, clear any “installation in progress” state, and reinstall/repair Office cleanly.

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References:

• Error code 0-3 when installing Office
• Repair an Office application
• "...Another installation is in progress..." or error code 0-1018, 17003-2031, or 2035-0 when installing Office
• Office is taking long to install
• How to fix my MS Word? - Microsoft Q&A
• we are sorry, but word has run into an error that is preventing it from working correctly. Word will need to be closed as a result. Would you like us to repair now? - Microsoft Q&A
• When I open an excel file it shows - We're sorry, but excel has run into an error that is preventing it from working correctly, Excel will need to be closed as a result. would you like us to repair now? then shows the option "repair now","help","close" - Microsoft Q&A