Microsoft releases KB5021751 in order to detect outdated Office installations

Microsoft has released the KB5021751 upgrade to determine how many customers use an Office version which is out of support.

This update will not install any files on the systems. Instead, it will only run one time to see if Microsoft Office is up-to-date or will require an upgrade.

Redmond stated that following the installation of KB5021751 via Windows Update, no restart is required.

According to the company, it is important that customers do not continue using obsolete Office versions.

The advisory does not mention the information that the KB5021751 updates will search for or what it will send to Microsoft servers.

This update was published by Microsoft on January 17, and first discovered by .

This update will be silent and not install anything to the device.

These steps can be used by those who do not want to update their system.

  1. Run the “Show/hide updates troubleshooter” from .
  2. Next, click on “Next”
  3. Click on the KB5021751 Update
  4. Next, click on “Next”
  5. Restart your device if prompted

Office 2007 and Office 2010 were already out of support many years ago in , and respectively). Office 2013 will be ending its extended support later this year. .

Microsoft ceases to provide technical support for Office versions that have reached the end of their support.

Support content has been retired and is not updated.

Microsoft users with outdated Office versions install and download a free trial version of Microsoft 365 security and productivity apps suite.

BleepingComputer reached Microsoft earlier today to get more information, but a spokesperson for Microsoft was unavailable immediately.