Microsoft is preparing users for a significant change that could impact their Windows PCs in June 2026. The company is phasing out support for the Extended Validation Code Signing (EVCS) certificate, a crucial component for ensuring the authenticity and integrity of Windows updates.
This means that after June 2026, Windows PCs that haven’t been updated to support EVCS will likely fail to boot. The EVCS certificate is used to verify that updates come directly from Microsoft and haven’t been tampered with by malicious actors. Without it, the operating system will refuse to load, effectively rendering the computer unusable.
The announcement, made by Microsoft, has sparked concern among PC users and IT professionals alike. While the change is years away, it’s crucial for users to be aware of the impending deadline and take proactive steps to avoid disruption.
What’s Happening?
Microsoft is transitioning to a new certificate system that offers enhanced security features. EVCS, while effective, has limitations and is being replaced by a more robust solution. The older certificate is being retired to improve the overall security posture of Windows.
How to Fix It – Preparing for 2026
Fortunately, there are steps users can take to mitigate the risk. The primary solution is to ensure that your Windows PC is running a version of Windows that supports EVCS. Most modern versions of Windows 10 and 11 already have this support. However, older versions will need to be upgraded.
Here’s a breakdown of what you need to do:
- Check Your Windows Version: Verify that you are running Windows 10 or 11.
- Update Windows: Ensure you have the latest Windows updates installed. Microsoft regularly releases updates that include EVCS support.
- Consider Upgrading: If you are running an older version of Windows that doesn’t support EVCS, consider upgrading to a newer version.
Impact on Businesses
The impact of this change will be particularly significant for businesses that rely on Windows PCs for their operations. Organizations need to develop a plan to upgrade their systems before the deadline to avoid downtime and data loss. IT departments should begin assessing their current Windows environment and prioritizing upgrades.
Timeline and Key Dates
The transition to the new certificate system will be gradual, with Microsoft providing ample time for users to prepare. However, it’s essential to start planning now to avoid last-minute scrambling. June 2026 is the critical date to be aware of.
Resources
Microsoft has published detailed information about the upcoming changes on its support website. Users can find more information and guidance here: Microsoft’s official announcement. Staying informed and taking proactive steps will ensure a smooth transition and prevent unexpected disruptions to your Windows PC.
Ultimately, while the change may seem distant, preparing for it now will save you significant headaches down the road.
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