How to Fix Ordinal 1569 mso.dll Error in Office 2016
Question details
Users encounter a recurring error stating that ordinal 1569 cannot be located in the mso.dll dynamic link library when using Microsoft Office 2016.
- Product
- Microsoft Office 2016
- Device & OS
- not provided
- Scenario
- Launching or operating Microsoft Office 2016 applications.
- Observed behavior
- An error message appears indicating that ordinal 1569 could not be located in mso.dll, which persists even after completely reinstalling the Office software.
Ensure your computer is connected to a stable internet connection and that you have administrative privileges to download and install Windows updates for Microsoft Office.
Install Office 2016 Updates KB5002498 and KB5002457
Applying these specific Microsoft Knowledge Base (KB) updates directly patches the mso.dll missing ordinal issue in Office 2016.
The ordinal 1569 error in mso.dll is a known bug in certain builds of Office 2016. Microsoft has released targeted patches to correct this dynamic link library mismatch. Reinstalling the base version of Office 2016 often fails to fix this because it reintroduces the same bugged file version.
Open your web browser and navigate to the official Microsoft Update Catalog website.
Type 'KB5002498' into the search bar and download the update version that matches your system architecture (32-bit or 64-bit).
Run the downloaded executable file and follow the on-screen prompts to install the KB5002498 update.
Repeat the process by searching for 'KB5002457' in the Update Catalog, downloading the correct version, and installing it.
Restart your PC to apply the changes and launch an Office 2016 application to verify the error is resolved.
Switch to WPS Office to Avoid mso.dll Errors
If Microsoft Office 2016 continues to display dynamic link library errors like ordinal 1569, consider switching to WPS Office. It is a free, lightweight, and highly compatible alternative that offers a familiar interface without the recurring installation bugs of legacy Office versions.
- 1. Download WPS Office: Visit the official WPS website and download the free installation package.
- 2. Install the Software: Run the installer. The lightweight package installs quickly without complex DLL dependencies.
- 3. Open Your Documents: Launch WPS Office and open your existing Word, Excel, or PowerPoint files directly.
Frequently Asked Questions
What does the 'ordinal 1569 cannot be located in mso.dll' error mean?
This error indicates a mismatch or missing function within the mso.dll file, which is a core component of Microsoft Office. It usually happens when Office updates are applied incompletely, leaving the software searching for a function (ordinal 1569) that doesn't exist in the currently installed DLL version.
Why didn't reinstalling Office 2016 fix the mso.dll error?
Reinstalling Office 2016 from your original installation media often installs the base version that contains the exact same underlying bug. To resolve it, you must apply specific post-release updates (KB5002498 and KB5002457) to patch the faulty mso.dll file.
How do I check if KB5002498 is already installed on my computer?
Open the Windows Control Panel, navigate to 'Programs', and select 'View installed updates'. You can use the search box in the top right corner to look for 'KB5002498' in the list of installed Microsoft Windows and Office updates.
