Uninstall & Reinstall Issues

Fix Office 2021 Requires Online Repair After Every Restart

Maira Mehtab Sep 22, 2026 869 views

Question details

Users experience a recurring issue where Microsoft Office 2021 applications continually prompt for an online repair upon launching after every system reboot.

Product: Microsoft Office 2021
Device & OS: Windows 11 ARM64
Scenario: Opening any Office application after restarting the computer.
Observed behavior: Office fails to launch normally, repeatedly asking for an online repair, which forces a lengthy process that may also unexpectedly reinstall OneDrive.

Before you start

Before modifying system settings or running uninstallation tools, verify whether Office specifically requests a repair or offers to start in Safe Mode, and have your Microsoft account credentials ready for a potential reinstallation.

Solution 1Recommended

Disable COM Add-ins in Safe Mode

Conflicting third-party add-ins often cause Office applications to crash or trigger the repair prompt on startup.

Open Office in Safe Mode

Press the Windows key + R, type the application executable followed by /safe (for example, 'winword /safe' or 'excel /safe'), and press Enter.

Navigate to Add-ins Management

Click on 'File' in the top-left corner, select 'Options', and then click on 'Add-ins' from the left sidebar.

Disable COM Add-ins

At the bottom of the window next to 'Manage', select 'COM Add-ins' from the dropdown and click 'Go'. Uncheck all add-ins in the list and click 'OK'. Restart the computer to see if the issue is resolved.

Identify the Problematic Add-in: If Office starts normally after disabling all add-ins, enable them one by one, restarting Office each time, to isolate the specific add-in causing the repair loop.

Solution 2

Reset Office Registry Settings

Damaged or corrupted user profile settings in the registry can force Office into a continuous repair cycle.

Solution 3

Completely Uninstall and Reinstall Office

If the repair loop continues, deeply corrupted installation files might be at fault. A clean uninstallation is required.

Free Microsoft Office alternative

Switch to WPS Office to Avoid Persistent Repair Loops

Tired of dealing with endless Microsoft Office repair prompts, complicated registry edits, and frustrating downtime? Switch to WPS Office, a lightweight, free alternative that installs quickly and runs flawlessly without constant errors on modern Windows systems.

1. Download the Installer: Visit the official WPS website and click the download button for the free version of WPS Office.
2. Install the Software: Run the lightweight installer to quickly set up WPS Office on your PC in just a few minutes.
3. Open Your Files Seamlessly: Open all your existing Microsoft Word, Excel, and PowerPoint documents effortlessly without worrying about format conversion.

Free to use with a familiar, easy-to-navigate interface.Fully compatible with Microsoft Office formats like DOCX, XLSX, and PPTX.Lightweight installation with no persistent repair loops or bloated background processes.Seamlessly supports Windows systems without complex registry issues.

microsoft office alternative - wps office

Frequently Asked Questions

Why does Office 2021 keep asking to repair every time I open it?

This repair loop is typically caused by corrupted installation files, conflicting third-party COM add-ins, or damaged user profile settings in the Windows registry.

Will an online repair delete my personal documents?

No, performing an online repair only fixes or reinstalls the Microsoft Office application files. Your personal documents, spreadsheets, and data will remain untouched.

Does the Office online repair process reinstall OneDrive?

Yes, because the online repair essentially reinstalls the entire Office suite, it will restore all default components, which includes Microsoft OneDrive.

How can I tell if my user profile is causing the Office repair loop?

You can test this by creating a new local Windows account. Log into the new account and launch Office; if it opens normally without requesting a repair, the issue is tied to your original Windows user profile.

Installation & Activation