Microsoft Windows 10 End of Life guidance
Published: October 6, 2025
Overview
Microsoft has announced that support for Windows 10 will officially end on Oct. 14, 2025. This applies to all mainstream editions, including Pro, Enterprise and Education. After this date, devices running Windows 10 will no longer receive security updates, feature enhancements or technical support from Microsoft.
U of T’s Information Security Standard requires that software vulnerabilities be remediated by installing available security patches in a timely fashion. Once support for Windows 10 ends, it will no longer comply with the U of T Standard.
Why is this important?
- Security risks: Without regular updates, Windows 10 systems will become increasingly vulnerable to security threats, including malware and ransomware.
- Software compatibility: Over time, newer applications and services may no longer be compatible with Windows 10, affecting productivity and access to essential tools.
- Microsoft 365 support: While Microsoft 365 applications will continue to function on Windows 10, support will end on Oct. 14, 2025. This means the apps won’t receive new features or security updates on this platform.
Does this apply to me?
This applies to anyone running the Windows 10 operating system on their device.
Not sure what operating system you are running on your device? Check out Microsoft’s website to find out.
Required action
If you own a device that runs Windows 10 operating system, please work with your local IT team to action one of the available options:
- 1Upgrade your machine’s operating system:
Contact your local IT team for guidance on transitioning to supported operating systems and ensuring data integrity during the upgrade process. - 2Purchase a new computer:
In some cases, purchasing a new computer may be a better option than continuing to maintain outdated hardware, particularly if the warranty has expired, the device no longer supports a current and actively patched operating system, or the cost of repairs exceeds the price of a replacement.Consult with your local IT team to assess whether a new computer is necessary and securely decommission the old one.
- 3
Decommission the computer:
Determine whether the computer is no longer needed and should be taken offline. If so, work with your local IT team to have it formally decommissioned. - 4Purchase extended support:
Microsoft offers a temporary Extended Security Updates (ESU) program for Windows 10 at additional cost. This option should only be considered after all other upgrade paths have been explored, as it presents significant operational and financial challenges.Access to ESU may vary by campus and unit. Some units may not coordinate or fund ESU purchases, and upgrading to Windows 11 or another supported operating system will be the most viable option.
The ESU option is only available for a limited time, after which Microsoft will not provide further support. If you do choose this option, please plan to migrate to supported operating system versions by Oct. 14, 2027.
Please work with your local IT team to determine if purchasing ESU is the right option for you and coordinate on next steps.
Policy alignment and exceptions
The Office of the CISO is actively collaborating with units to address the risks associated with Windows 10 devices and will assist units in blocking vulnerable devices from the network after Oct. 14, 2025.
In alignment with the Policy of Information Security and the Protection of Digital Assets and the decision endorsed by the Information Security Council in September 2024, the CISO has the authority to enforce removal or isolation of systems that no longer receive security updates or vendor support unless a valid exception has been approved by the local unit or by Information Security.
Need help?
If you need assistance, please contact your local IT helpdesk.
