Excel Performance Problems

How to Disable the Slow Workbook Performance Message in Excel

Maira Mehtab Sep 28, 2026 869 views

Question details

Users are encountering a 'Slow Workbook' prompt in Excel, often accompanied by unresponsive buttons, and want to know how to disable this automatic performance check.

Product: Microsoft Excel
Device & OS: not provided
Scenario: Working with large or complex workbooks that trigger Excel's automatic performance evaluation.
Observed behavior: Excel displays a Slow Workbook performance message. The buttons on this prompt frequently freeze and do not respond to clicks. Currently, no supported setting exists to permanently disable the prompt.

Before you start

Since the prompt buttons may become unresponsive, ensure your recent work is saved automatically or backed up, as you may need to force-restart the application.

Solution 1Recommended

Restart Excel and Submit Feedback

Because there is no official toggle to disable this feature, restarting resolves the frozen prompt, while submitting feedback encourages Microsoft to release a fix.

Microsoft has not yet provided a built-in setting, registry key, or group policy to permanently turn off the Check Performance feature. Managing the application state and reporting the issue is currently the primary supported action.

Force quit Excel if frozen

If the Slow Workbook prompt buttons do not respond, press Ctrl + Shift + Esc to open the Task Manager, locate Microsoft Excel, and click 'End task'.

Reopen your workbook

Launch Excel again and open your file. If auto-recover prompts you, choose the most recent safe version of your workbook.

Report the issue

Navigate to the 'Help' tab on the Excel ribbon, click on 'Feedback', and choose 'Report a Problem'. Explain that the Slow Workbook prompt is intrusive and the buttons are unresponsive.

Ongoing Microsoft Issue: As discussed in Microsoft Community forums, a permanent disable option is not currently available. Keep your Office suite updated to receive potential future patches.

Solution 2

Optimize Your Workbook to Prevent the Prompt

Preventing the workbook from being flagged as 'slow' is the best proactive workaround since the prompt itself cannot be disabled.

Free Microsoft Office alternative

Switch to WPS Office for Smooth and Fast Spreadsheet Management

If Microsoft Excel's persistent performance prompts and unresponsive dialog boxes are slowing down your workflow, consider trying WPS Office. It provides a lightweight, highly compatible spreadsheet environment that handles complex data smoothly without intrusive mandatory checks.

1. Download and install WPS Office: Visit the official WPS website, download the free suite, and complete the lightweight installation process.
2. Open WPS Spreadsheet: Launch the application and select the Spreadsheet module, which mirrors the traditional Excel layout.
3. Load your Excel file: Simply drag and drop your existing .xlsx file into the application. Your data, formulas, and formatting will load instantly without unnecessary performance checks.

Highly compatible with Microsoft Excel file formats (.xlsx, .xls, .csv)Lightweight software architecture that opens large and complex files quicklyFree from intrusive, un-disableable automatic performance promptsFamiliar user interface requiring zero learning curve for Excel users

microsoft office alternative - wps office

Frequently Asked Questions

Why does Excel show a Slow Workbook message?

Excel automatically scans workbooks for unnecessary formatting, empty cells containing style data, and complex calculations. If it detects elements that heavily impact processing time or file size, it triggers the performance warning to encourage optimization.

Can I disable the Check Performance feature in Excel settings?

No, currently Microsoft does not provide an official setting, menu toggle, or registry key to permanently disable the automatic workbook performance check prompt.

What should I do if the performance prompt buttons do not respond?

If the buttons on the prompt freeze, you will need to force quit Excel using the Windows Task Manager (Ctrl + Shift + Esc) or macOS Activity Monitor, then reopen your file. Submitting a report via Help > Feedback is recommended.

Does saving the file in a different format help?

Saving your workbook as an Excel Binary Workbook (.xlsb) can sometimes improve overall calculation speed and reduce file size, which might indirectly prevent the performance prompt from being triggered.

Excel & Data Problems