When Microsoft announced/released Windows 8.1 Update they informed end users that the update would be required in order to download security updates. In other words Windows 8.1 Update will be the starting point for official support for Windows 8.1.

The deadline, at least up until this morning, was the May Patch Tuesday.

Now, Patch Tuesday is still coming tomorrow with a batch of updates for several pieces of Windows software however that original deadline to get update to Windows 8.1 Update has been shifted out to next month’s Patch Tuesday.

Brandon LeBlanc, the Windows Blogger, posted details about this change earlier today:

While we believe the majority of people have received the update, we recognize that not all have. Having our customers running their devices with the latest updates is super important to us. And we’re committed to helping ensure their safety. As a result, we’ve decided to extend the requirement for our consumer customers to update their devices to the Windows 8.1 Update in order to receive security updates another 30 days to June 10th. As noted previously, consumer customers who do not update their Windows 8.1 devices to the Windows 8.1 Update by this new deadline will no longer receive updates. We’re confident that within the next month, the majority of the remaining customers who haven’t updated their devices to the Windows 8.1 Update will be able to do so.

If you have automatic updates turned on then you likely already have this update otherwise make sure you check Windows Update for Windows 8.1 Update.