How To Fix Outlook / OneDrive Sign-In Error – Microsoft AAD Broker Plugin Issue

Issue

When opening Outlook or OneDrive, users may encounter the following error:

• Error Code: 2148073494

• Error Tag: 657rx

This typically prevents the user from signing in successfully.

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Cause

The issue is usually caused by a corrupted or misconfigured Microsoft AAD Broker Plugin cache on the user profile.

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Resolution Steps

1. Access the User Profile Directory

Step 1: Log in to the Admin Session

Connect to the Admin session on the Cloud Computer (VM).

Step 2: Open File Explorer

Navigate to the following path:

C:\Users\%username%\AppData\Local\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy

Note: Replace %username% with the affected user’s profile name.

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2. Rename the Broker Plugin Folder

Step 1: Locate the Folder

Find the folder named:

Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy

Step 2: Rename the Folder

Rename it to:

Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy.old

This will force Windows to recreate a fresh plugin cache.

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3. Sign In Again

After renaming the folder:

1. Fully sign out of the affected Windows user session and sign in again

2.  Have the user open Outlook or OneDrive again

3. When prompted to sign in, choose:

“No, sign in to this app only”

This ensures the account is connected correctly without re-registering the device.
 

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Expected Result

After completing these steps:

• The sign-in error should be resolved

• Outlook and OneDrive should open normally

• The user should be able to sign in without further errors