Windows Integration Errors

Fix Microsoft Spreadsheet Compare dcfmsowrapper.x86.dll Error

Rana Garcia Sep 28, 2026 868 views

Question details

The user needs to resolve an issue where Microsoft Spreadsheet Compare crashes immediately upon launch due to a dcfmsowrapper.x86.dll error.

How to Fix Microsoft Spreadsheet Compare dcfmsowrapper.x86.dll Crash Error

Product: Microsoft Spreadsheet Compare
Device & OS: not provided
Scenario: Attempting to open and use Microsoft Spreadsheet Compare to compare Excel workbooks.
Observed behavior: Microsoft Spreadsheet Compare fails to open or closes immediately, displaying an error related to SpreadsheetCompare.exe and dcfmsowrapper.x86.dll. The issue persists even after repairing and reinstalling the Office suite.

Before you start

Ensure you are logged into Windows with Administrator privileges before modifying system registries or DLL files. Never download the missing dcfmsowrapper.x86.dll file from unofficial third-party websites, as this poses significant security risks.

Solution 1Recommended

Re-register the dcfmsowrapper.x86.dll File via Command Prompt

Use the built-in Windows regsvr32 tool to unregister and re-register the problematic DLL file. This often resolves application launch failures caused by broken system file links.

Since standard Office repairs and reinstallations may not reset specific broken DLL registries, manually re-registering the DLL file using an elevated Command Prompt forces Windows to correctly recognize the integration file required by Spreadsheet Compare.

Open Command Prompt as Administrator

Click the Windows Start menu, type 'cmd' into the search bar, right-click on 'Command Prompt', and select 'Run as administrator'.

Unregister the DLL File

In the Command Prompt window, type 'regsvr32 /u dcfmsowrapper.x86.dll' (without quotes) and press Enter to unregister the file.

Re-register the DLL File

Next, type 'regsvr32 dcfmsowrapper.x86.dll' and press Enter to properly register the file back into the system.

Restart Your Computer

Close the Command Prompt and reboot your PC to apply the changes, then attempt to launch Spreadsheet Compare again.

Re-register the dcfmsowrapper.x86.dll File via Command Prompt

Architecture Verification: Verify whether your Office installation is 32-bit or 64-bit, as the 'x86' in the DLL name specifically pertains to 32-bit architecture processes. Conflicting architectures might require reinstalling the correct Office version.

Solution 2

Contact Your Microsoft 365 Administrator

If command-line solutions do not resolve the error, escalate the issue to your IT department or Microsoft Support for advanced diagnostics.

Free Microsoft Office alternative

Switch to WPS Office for a Crash-Free Spreadsheet Experience

If persistent Microsoft Office DLL errors are disrupting your workflow, consider switching to WPS Office. It provides a lightweight, highly stable environment for all your spreadsheet tasks without the complex system dependencies that cause unexpected crashes.

1. Download WPS Office: Visit the official WPS Office website and download the free installation package for your operating system.
2. Install the Software: Run the installer and follow the quick on-screen instructions to set up the lightweight office suite on your device.
3. Open Your Spreadsheets: Launch WPS Spreadsheets and open your existing Excel files directly to continue your work without DLL errors.

Lightweight architecture minimizes system errors and registry conflictsFully compatible with Microsoft Excel formats (.xlsx, .xls, .csv)Intuitive, familiar interface ensures a zero-learning-curve transitionFree to use with comprehensive data management and calculation tools

microsoft office alternative - wps office

Frequently Asked Questions

Why does Microsoft Spreadsheet Compare crash instantly?

This immediate crash is typically caused by a corrupted or improperly registered DLL file, specifically dcfmsowrapper.x86.dll, which is essential for the application's integration and execution.

Is it safe to download dcfmsowrapper.x86.dll from the internet?

No, it is highly unsafe. Downloading DLL files from unofficial third-party websites exposes your system to severe security risks, including malware and viruses. Always use built-in Windows tools or official Microsoft repairs.

What if reinstalling Office doesn't fix the Spreadsheet Compare error?

If an Office repair or reinstallation fails, the registry may still hold broken links. You must manually unregister and re-register the DLL file using an elevated Command Prompt, or contact Microsoft Support for further assistance.

Microsoft Office Error Codes