How to Fix Excel Side-by-Side Configuration and Manifest Errors
Question details
The user is unable to open Excel on a newly imaged computer due to a damaged or incompatible Office installation.

- Product
- Microsoft Excel
- Device & OS
- Windows
- Scenario
- Attempting to launch Excel after deploying or imaging a new computer system.
- Observed behavior
- Excel fails to open, and the activation-context log indicates that EXCEL.EXE.Manifest cannot be parsed because of an XML syntax error.
Ensure you are logged in to Windows with an administrator account and close any background applications, as troubleshooting may require repairing system files and restarting your computer.
Run the Microsoft Office Repair Tool
Using the built-in Office repair utility is the fastest way to replace corrupted manifest files and fix side-by-side configuration errors.
A manifest parsing error often indicates that the Microsoft Office installation files are damaged or that system architecture bitness is mismatched. Running a repair operation will scan and replace the broken EXCEL.EXE.Manifest file automatically.
Press the Windows key, type 'Control Panel', and press Enter. Navigate to 'Programs' and then click on 'Programs and Features'.
Scroll through the list of installed applications to find your version of Microsoft Office.
Right-click on Microsoft Office and select 'Change'. When the prompt appears, choose 'Quick Repair' and click 'Repair'.
If Quick Repair does not resolve the manifest error, repeat the process but select 'Online Repair' for a more thorough reinstallation of the configuration files.

Completely Uninstall and Reinstall Microsoft Office
If standard repair tools fail, completely removing Office with the official deployment or cleanup tools ensures all corrupted manifests are deleted before a fresh installation.
Switch to WPS Office for a Hassle-Free Experience
If complex Windows side-by-side errors and corrupted manifest files are keeping you from your spreadsheet work, consider switching to WPS Office. It is a highly compatible, lightweight, and free alternative to Microsoft Office that installs quickly without relying on fragile side-by-side configurations.
- 1. Download WPS Office: Visit the official WPS website and click the free download button to get the lightweight installer.
- 2. Install the Software: Run the installer. The process takes only a few minutes and does not require complex system configurations.
- 3. Open Your Spreadsheets: Launch WPS Spreadsheets and instantly open your existing Excel documents to resume working without interruption.

Frequently Asked Questions
What causes an Excel side-by-side configuration error?
This error is typically triggered by conflicts or corruption within the Microsoft Visual C++ Redistributable packages, a misconfigured or damaged EXCEL.EXE.Manifest file, or incompatible system updates applied to a newly imaged computer.
Will running an Office repair delete my personal Excel files?
No. Running a Quick Repair or an Online Repair only replaces missing or corrupted application files and fixes registry keys. Your personal documents, spreadsheets, and data are entirely safe.
How do I check the activation-context log in Windows?
You can view the activation-context log using the built-in Event Viewer. Search for 'Event Viewer' in the Windows start menu, navigate to Windows Logs > Application, and look for recent Error events with the source 'SideBySide' to see details about the manifest parsing failure.
Do I need to reinstall Windows to fix a manifest parsing error?
Reinstalling Windows is very rarely necessary. In almost all cases, repairing Microsoft Office, reinstalling it cleanly, or fixing the Microsoft Visual C++ redistributables will resolve the parsing and side-by-side errors.




