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How to Fix The Operating System Is Not Configured Error in Excel

Algirdas JasaitisAlgirdas Jasaitis Oct 10, 2026 869 views

Question details

The user is unable to open Excel files from OneDrive using the desktop application due to system configuration and protected view errors.

How to Fix 'The Operating System Is Not Configured' Error When Opening Excel Files
Product
Microsoft Excel
Device & OS
Windows
Scenario
Opening spreadsheet files directly from OneDrive into the desktop version of Microsoft Excel.
Observed behavior
Excel fails to open the file and displays the errors 'The operating system is not configured to run this application' and 'The file could not open in Protected View', although the web version works fine.
Before you start

Before proceeding with troubleshooting, ensure you have a stable internet connection for OneDrive syncing and temporarily close any other running Microsoft Office applications.

Solution 1Recommended

Start Excel in Safe Mode and Disable Add-ins

Running Excel in Safe Mode bypasses third-party add-ins and custom settings that often interfere with opening files in Protected View.

Sometimes, outdated or incompatible COM add-ins can conflict with Excel's ability to launch properly from cloud locations like OneDrive.

1
Open the Run dialog

Press the Windows key + R simultaneously on your keyboard to open the Run dialog box.

2
Launch Safe Mode

Type 'excel /safe' in the text box and click OK. Excel will now open with a 'Safe Mode' indicator in the title bar.

3
Disable COM Add-ins

If Excel opens successfully, click on File > Options > Add-ins. Select 'COM Add-ins' from the Manage drop-down at the bottom, click Go, uncheck all listed add-ins, and click OK.

Identify the Culprit: If disabling all add-ins solves the issue, try re-enabling them one by one to identify which specific add-in is causing the operating system configuration error.
Free Microsoft Office alternative

Avoid Complex Configuration Errors with WPS Office

If Microsoft Excel continues to show operating system configuration errors and refuses to open your OneDrive files, consider switching to WPS Office. It provides a lightweight, fast, and completely free alternative for managing all your spreadsheets without deep OS registry dependencies.

  1. 1. Download and Install: Download WPS Office for free from the official website and run the quick installer.
  2. 2. Open WPS Spreadsheets: Launch the WPS Office application and click on 'Spreadsheets' from the main dashboard.
  3. 3. Open Your Excel File: Click 'Open' and select your problematic Excel file from your local drive or OneDrive folder to view and edit it instantly.
Fully compatible with Microsoft Excel formats including .xlsx, .xls, and .csvLightweight architecture that avoids complex Windows OS configuration errorsFamiliar user interface ensuring a seamless migration with zero learning curveBuilt-in cloud integration for opening and saving files seamlessly
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Frequently Asked Questions

What causes the 'operating system is not configured to run this application' error in Excel?

This error is typically caused by corrupted Microsoft Office installation files, misconfigured Windows registry keys, conflicting third-party add-ins, or pending Windows updates that disrupt Office's background services.

Why can I open the file in Excel for the web but not on the desktop?

Excel for the web runs entirely in your browser and does not rely on your computer's local operating system configurations, registry keys, or desktop add-ins, which is why it bypasses the desktop application errors.

How can I disable Protected View in Excel manually?

You can manually adjust this by opening Excel (even a blank workbook), navigating to File > Options > Trust Center > Trust Center Settings > Protected View, and unchecking the options for files originating from the internet or potentially unsafe locations.

Will I lose my OneDrive files if I completely uninstall Office?

No, uninstalling Microsoft Office only removes the desktop applications. Your actual Excel files stored securely on OneDrive or your local hard drive will remain completely safe and untouched.