How to fix Error 1324 on Windows 11

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Windows 11 Error 1324: Unable to Update Password

Why This Error Happens

Error 1324 occurs when the new password contains a character that Windows Installer (or the specific password change dialog) does not permit—most commonly a backslash (\) or other reserved symbols. This is not a system corruption issue but a validation rule triggered because certain installer-based password changes rely on directory paths internally, and special characters conflict with path parsing logic. Additionally, this can surface if the password field is inadvertently pulling in leading/trailing spaces or Unicode characters that Windows sanitization rejects.

Step-by-Step Resolution Guide

Step 1: Remove Restricted Characters from Your Password

  • Avoid using a backslash (\) anywhere in the password string, as this is the most common trigger for Error 1324.
  • Also avoid other high-risk symbols such as /, ", <, >, |, and leading/trailing spaces.
  • Stick to a safe mix of uppercase, lowercase, numbers, and common symbols like !, @, #, $, or %.

Step 2: Change the Password via Alternate Windows Interface

  • Press Ctrl + Alt + Delete and select Change a password instead of using Settings.
  • Alternatively, open Control Panel > User Accounts > User Accounts > Manage another account.
  • Try setting the password through Computer Management: right-click Start > Computer Management > Local Users and Groups > Users, right-click the account, and select Set Password.

Step 3: Check Group Policy Password Complexity Requirements

  • Open the Local Group Policy Editor by running gpedit.msc.
  • Navigate to Computer Configuration > Windows Settings > Security Settings > Account Policies > Password Policy.
  • Review Password must meet complexity requirements and ensure your new password satisfies length and character-mix rules without using restricted symbols.

Step 4: Clear Cached Credentials (If Using Microsoft Account)

  • Open Settings > Accounts > Your info and confirm whether you’re using a local or Microsoft account.
  • If using a Microsoft account, go to account.microsoft.com in a browser and reset the password there first.
  • Restart the PC to force Windows to sync the new credential and clear any cached authentication tokens.

Alternative or Verification Steps

  • After changing the password, lock the screen (Windows + L) and log back in to confirm the new password is accepted without triggering Error 1324.
  • If the error persists, create a temporary new local administrator account via netplwiz, log in with it, and attempt the password change on the original account from there instead.