Update & Upgrade Problems

How to Install Microsoft Office Version 2403 Build 17425.20146 Update

WPS Content Manager Oct 7, 2026 870 views

Question details

The user needs information on the Microsoft Office version 2403 (build 17425.20146) release, its bug fixes, and how to successfully install the update.

How to Install Microsoft Office Version 2403 Build 17425.20146 Update

Product: Microsoft Office
Device & OS: Windows
Scenario: Updating the Microsoft Office suite to apply the March 2024 patches.
Observed behavior: Office requires a manual or automatic update to version 2403 (build 17425.20146) to fix an Outlook non-delivery report (NDR) issue.

Before you start

Ensure your computer is connected to a reliable internet network and save all your open documents before initiating the Microsoft Office update.

Solution 1Recommended

Install the Version 2403 Update via Office Account Settings

This is the standard and recommended method to force Microsoft Office to check for and install the latest version 2403 build.

Microsoft released Office version 2403 (build 17425.20146) for Microsoft 365 Personal and retail versions of Office 2016, 2019, and 2021 on March 28, 2024. Reviewing Microsoft's release notes is recommended before deployment.

Open an Office Application

Launch any Microsoft Office application, such as Word or Excel, and open a blank document.

Navigate to Account Settings

Click on 'File' in the top-left corner of the ribbon menu, then select 'Account' (or 'Office Account' in Outlook) from the bottom-left sidebar.

Trigger the Update

Under the 'Product Information' section, click on the 'Update Options' drop-down menu and select 'Update Now'. Office will begin downloading the version 2403 update in the background.

Verify the Build Number

Once the update finishes, return to the 'File' > 'Account' page and look under the 'About' section to confirm that build 17425.20146 is currently installed.

Install the Version 2403 Update via Office Account Settings

Update Successful: After updating, the Outlook non-delivery report (NDR) issue when replying to or forwarding messages should be fully resolved.

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Frequently Asked Questions

What bugs are fixed in Microsoft Office build 17425.20146?

This specific build primarily addresses a known bug in Outlook where users would unexpectedly receive a non-delivery report (NDR) when attempting to reply to or forward email messages.

Which versions of Office are eligible for the 2403 update?

The version 2403 (build 17425.20146) update is rolled out to Microsoft 365 Personal subscribers, as well as users running retail versions of Office 2016, Office 2019, and Office 2021.

Why does my Office Account page not show the 'Update Now' button?

If you do not see the 'Update Now' option under 'Update Options', you may need to click 'Enable Updates' first. If your Office license is managed by your company's IT department, they may control when updates are deployed, and the manual update option might be hidden.

Installation & Activation