Permission & Access Issues

How to Fix Excel Sheet Password Not Working When Unprotecting Worksheets

Partner Editor Oct 1, 2026 869 views

Question details

The user is unable to unprotect an Excel worksheet because the system rejects a previously working password, even though the workbook itself opens normally.

Product: Microsoft Excel
Device & OS: not provided
Scenario: Attempting to unprotect multiple Excel worksheets to edit or update the file contents.
Observed behavior: Excel repeatedly rejects the password as incorrect, preventing the user from removing the sheet protection and accessing locked cells.

Before you start

Before troubleshooting, create a backup copy of your current Excel workbook to ensure you do not accidentally overwrite or corrupt the file during the recovery process.

Solution 1Recommended

Verify Password Accuracy and Testing Environment

Ensure there are no hidden typos, spacing errors, or environment-specific glitches causing the password rejection.

Often, passwords fail due to unseen keystroke errors such as an active Caps Lock or trailing spaces. Typing the password in a visible format first can eliminate these variables.

Type password in a plain text editor

Open a plain text editor like Notepad on your computer and type your password to visually confirm there are no accidental capitalizations, leading spaces, or incorrect special characters.

Copy and paste the password

Highlight the text in Notepad, press Ctrl+C to copy it. Return to Excel's 'Unprotect Sheet' dialog box, click inside the password field, and press Ctrl+V to paste the exact password.

Test on an alternative device

If the password still fails, transfer the Excel file to a different computer or upload it to the web version of Excel. Attempt to unprotect the sheet there to rule out local application glitches.

Solution 2

Restore a Previous Version of the Workbook

If the password is truly corrupted or lost, rolling back to an earlier unprotected or accessible version is the safest recovery method.

Free Microsoft Office alternative

Switch to WPS Office for Reliable Spreadsheet Management

If you frequently encounter file glitches or permission issues in Microsoft Office, consider switching to WPS Office. It provides a lightweight, highly compatible spreadsheet environment that easily handles your existing files without unexpected lockouts.

1. Download and Install WPS Office: Visit the official WPS website, download the free version, and install it on your device.
2. Open WPS Spreadsheet: Launch the WPS Spreadsheet application from your desktop or start menu.
3. Load your Excel file: Click 'Open' and select your .xlsx file to manage your spreadsheets with a stable and familiar interface.

Highly compatible with Microsoft Excel (.xlsx) formatsLightweight application that runs smoothly on most devicesClear and easy-to-use worksheet protection settingsFree to download and use for essential office tasks

microsoft office alternative - wps office

Frequently Asked Questions

Why does my correct password not work in Excel?

This can happen due to an accidental space being copied, the Caps Lock key being active when the password was originally set, or rare file corruption that affects the worksheet protection metadata.

Is there a way to force unlock the Excel sheet without the password?

Modern Excel files (.xlsx) use strong encryption for password protection. Unless you use a specialized password recovery tool or restore a backup, there is no native way to bypass sheet protection without the correct password.

Does unprotecting one worksheet unprotect the entire workbook?

No. Worksheet protection (which locks specific cells) and Workbook protection (which locks structural elements like adding or deleting sheets) are separate features. If 40 sheets are individually protected, you must unprotect each one separately.

Document & File Issues