Outlook Error Codes

How to Fix Outlook for Mac Sign-In Error 9zj0v

Maira Mehtab Sep 22, 2026 869 views

Question details

The user is unable to sign in to Microsoft Outlook for Mac due to an error, though the sign-in succeeds when using a brand new macOS user profile.

Product: Microsoft Outlook for Mac
Device & OS: macOS
Scenario: Attempting to sign in to the Outlook email client on a Mac under the current user profile.
Observed behavior: The application fails to authenticate and displays the error message 'Something went wrong. [9zj0v]'.

Before you start

Make sure to save your work in other Microsoft Office applications and have your Microsoft account credentials ready before proceeding with these troubleshooting steps.

Solution 1Recommended

Remove Outlook Credentials from Keychain Access

Clearing corrupted keychain entries is the most common fix for profile-specific sign-in issues.

Since the error only occurs on your current Mac profile, the issue is likely tied to corrupted authentication tokens saved in your local Keychain.

Force quit Office applications

Press Command + Option + Esc, select Outlook and any other open Microsoft applications, and click Force Quit.

Update your system

Check for and install the latest macOS and Microsoft Office updates to ensure compatibility.

Open Keychain Access

Navigate to Applications > Utilities and launch the Keychain Access application.

Delete Microsoft credentials

Use the search bar to find 'Outlook' or 'Microsoft', select the relevant password or credential entries, right-click, and delete them. Restart Outlook and try signing in again.

Solution 2

Use the Microsoft Office License Removal Tool

Use this tool to completely wipe your Office activation files if keychain removal doesn't resolve the issue.

Solution 3

Reset Outlook Preferences and Reinstall

Resetting application preferences or performing a fresh install can fix deeper software corruption.

Free Microsoft Office alternative

Tired of Microsoft Office Sign-In Errors on Mac?

If persistent authentication issues like error 9zj0v are disrupting your workflow, consider switching to WPS Office. It provides a lightweight, highly compatible alternative to Microsoft Office without the complex licensing and profile conflicts.

1. Download WPS Office: Visit the official WPS website and download the free version for macOS.
2. Install and Launch: Run the installer and open WPS Office without worrying about complex license configurations.
3. Open Your Files: Instantly open and edit your existing Word, Excel, and PowerPoint documents with perfect formatting.

Fully compatible with Microsoft Office file formats including DOCX, XLSX, and PPTX.Lightweight installation that avoids complex profile and keychain licensing errors like 9zj0v.Free to use with a familiar, clean interface that requires no learning curve on macOS.

microsoft office alternative - wps office

Frequently Asked Questions

Why does Outlook error 9zj0v only happen on my current Mac profile?

This happens because authentication tokens or application preferences stored in your specific user Library or Keychain have become corrupted. A new macOS profile generates fresh, uncorrupted files, which is why it works there.

Will removing Office licenses delete my emails or contacts?

No. Using the license removal tool or deleting keychain entries only clears your activation and authentication data. Your emails, contacts, and calendar events remain safely stored on your email server and in your local Outlook profile database.

How do I find the hidden Library folder to reset Outlook preferences?

To access the hidden Library folder on macOS, open Finder, click on 'Go' in the top menu bar, and hold down the Option (Alt) key. The 'Library' option will appear in the drop-down menu for you to click.

Microsoft Office Error Codes