Tomorrow your Windows 10 PC will restart every few hours – that is if you haven’t bothered installing the full version yet. The Windows 10 technical preview will expire on October 1st.

Which Builds Are Expiring on October 1st?

The following builds of Windows 10 are affected and will expire on October 1st:

  • Build 9926,
  • Build 10041
  • Build 10049

You should see this message every time you log on: “This build of Windows will expire soon”

This Build Of Windows Will Expire Soon.png

Question: Can I Upgrade From The Technical Preview To The Full Version Of Windows 10?

No, that is not possible. The technical preview versions can NOT be upgraded to the final retail version, the differences are too big and an update does not exist. There are no legal ways to circumvent the restart every 2 hours.

However, Windows Insiders were given an extended RTM version. If you are an Windows Insider you may be able to download a copy of the RTM build, but the easiest way is to upgrade an earlier version of Windows (see below).

I’m Not A Windows Insider, How Do I Get Windows 10 For Free?

Windows 10 is free for 1 year for owners of previous Windows versions like Windows 7, 8 or 8.1 – if you own any of these then you can download an upgrade tool to get the latest version and keep your old files and settings.

Because it gets a little complicated you should read our guide on how to keep personal settings when upgrading

Should you run into upgrade issues, we documented various errors you may encounter during the upgrade e.g. “Setup Has Failed To Initialize Working Directory / Couldn’t Start Properly”

Once you have downloaded the correct upgrader for your current Windows version e.g. Windows 8 64-bit (American English) you can put Windows 10 on a bootable flash drive and upgrade without losing any files.