Office Compatibility Issues

How to Fix Unknown Error When Exporting Project Visual Reports

Steve K Oct 10, 2026 869 views

Question details

The user needs to resolve an unknown error that occurs when attempting to export Visual Reports containing baseline and actual work data.

How to Fix Unknown Error When Exporting Project Visual Reports

Product: Microsoft Project Professional 2021 / Microsoft Excel
Device & OS: not provided
Scenario: Exporting cumulative baseline work, cost compared with actual values, and resource data into Excel via Visual Reports.
Observed behavior: Microsoft Project displays an unknown error during the Visual Reports export process, typically caused by version incompatibilities with the installed Office or Excel software.

Before you start

Save your current Microsoft Project file and verify which versions of Microsoft Office and Excel are currently installed on your system before proceeding.

Solution 1Recommended

Verify Office Compatibility and Update Software

Visual Reports in MS Project are highly sensitive to the installed version of Microsoft Office and Excel. Ensuring all applications are up to date and compatible is the most common fix.

Incompatibilities often arise if you are running mismatched versions of Project and Excel (e.g., Project 2021 with an older version of Office), or if the bit-versions (32-bit vs 64-bit) do not match.

Check installed versions

Open Microsoft Project and Microsoft Excel. Navigate to File > Account in both programs to verify their version numbers and architecture (32-bit or 64-bit).

Install available updates

In the Account menu, click on Update Options and select Update Now to download and install any pending Microsoft Office updates.

Test the export

Restart your computer to ensure updates are applied, open your project file, and attempt to run the Visual Report again.

Verify Office Compatibility and Update Software

Version Matching: For optimal compatibility, Microsoft Project Professional 2021 should be paired with an equivalent version of Microsoft Office, such as Office 2021 or Microsoft 365.

Solution 2

Export Project Data Using Save As or VBA

If Visual Reports remain unavailable due to persistent compatibility issues, you can manually export the required baseline and resource data directly to a spreadsheet.

Free Microsoft Office alternative

Analyze Exported Project Data Easily with WPS Office

If you frequently encounter compatibility issues with heavy spreadsheet software when analyzing exported project data, consider switching to WPS Office. It provides a lightweight, highly compatible alternative for handling complex reports, resource data, and charts.

1. Download the software: Visit the official WPS website to download and install WPS Office Free.
2. Export your project data: In MS Project, use the 'Save As' method to export your resource and cost data as a standard Excel Workbook.
3. Analyze seamlessly: Open the exported file in WPS Spreadsheet to view, chart, and analyze your baseline work and costs without lag.

Fully compatible with Microsoft Excel (.xlsx and .csv) formats for seamless data analysis.Lightweight architecture that opens large exported resource datasets quickly.Familiar user interface requiring zero learning curve for transitioning users.Built-in professional charting tools to manually recreate your project visual reports.

microsoft office alternative - wps office

Frequently Asked Questions

Why does Microsoft Project show an unknown error when exporting Visual Reports?

This error is typically caused by version incompatibilities between Microsoft Project and the installed version of Microsoft Excel, mismatched system architectures (32-bit vs. 64-bit), or missing Office updates.

What data can I export if the Visual Reports feature is broken?

Even without Visual Reports, you can still export cumulative baseline work, actual costs, and detailed resource data by using the 'Save As Excel' Export Wizard or by running a custom VBA script.

Can I view Microsoft Project data exports in WPS Office?

Yes. While WPS Office does not directly integrate with MS Project's Visual Reports engine, you can export your Project data as a standard Excel file (.xlsx) or CSV, which opens seamlessly in WPS Spreadsheet for analysis and charting.

Office App Problems