Microsoft Faces Security Crisis for 400 Million PCs
Microsoft warns that 400 million Windows PCs are at risk as support ends soon.
400 million Windows PCs at risk
Windows 10 support ends October 14
Mandatory hardware limits for Windows 11
Ransomware threats increase after deadline
Enroll in Extended Security Update for protection
Windows 7 usage rising unexpectedly
Consider upgrading or using alternative OS
Microsoft officially ended support for Windows 10 on October 14, 2025. This marks the last day Microsoft provides security updates, bug fixes, and technical support for supported editions like Home, Pro, Pro Education, and Pro for Workstations.[1][2][4]
Impact of End of Support
Windows 10 devices will continue to function after this date but become vulnerable to security risks due to no more patches or updates.
Without security updates, PCs are exposed to viruses, malware, and other cyber threats.[2][4]
Performance issues may arise as the system and applications lose compatibility with newer software environments.
Windows 10 Usage and Upgrade Path
About 41% of PCs still run Windows 10 as of 2025.
Nearly 400 million Windows 10 PCs cannot upgrade to Windows 11 due to Microsoft’s strict hardware requirements.[3][1]
Windows 11 adoption is growing, but many users remain on Windows 10, especially those with older hardware.
Options for Users Post End of Support
Users facing the end of Windows 10 support can enroll in Microsoft’s free Extended Security Updates (ESU) program, which provides security updates until October 13, 2026, by signing in with a Microsoft account. Alternatively, users may upgrade to Windows 11 if their device meets hardware requirements, or switch to alternative operating systems like Linux if upgrading is not possible.[1][2][3]
1. Extended Security Updates (ESU) Program
Microsoft offers a free consumer ESU program extending security updates until October 13, 2026 for Windows 10 version 22H2.
Enrollment requires a Microsoft and OneDrive account.
This program provides security updates only, without new features or technical support.[7][9][2][3]
2. Upgrade to Windows 11
Eligible PCs can upgrade for free through Windows Update.
Upgrade notifications appear in Windows Update settings if compatible.
If the PC does not meet Windows 11 requirements, upgrading isn’t officially supported.[2][3]
3. Switch to Alternative Operating Systems
Older PCs unable to upgrade to Windows 11 may consider Linux distributions or Chromebook OS as secure, supported alternatives.[2]
Recommendations to Stay Protected
Check Windows Update for upgrade eligibility:
Settings > Privacy and Security > Windows Update > Check for updates
Backup important files to OneDrive or other cloud storage before making changes.
Consider enrolling in ESU if you need more time before upgrading or purchasing a new device.
For continued security, transition to Windows 11 or supported alternative OS promptly.[4][10][7]
Topic
Details
Windows 10 End of Support
October 14, 2025
Percentage Using Windows 10
Approx. 41% of PCs
Ineligible for Windows 11
Up to 400 million PCs due to hardware restrictions
Extended Security Updates
Free for 1 year post-support until October 13, 2026
Upgrade Path
Windows 11 (if hardware eligible) or alternative OS
Risks of Staying on Win 10
Security vulnerabilities, no patches, malware risk
Microsoft stresses upgrading for security, recommending Windows 11 for supported devices or enrolling in the consumer ESU program to help bridge the gap for unsupported machines. The deadline has passed, so immediate action is advised to avoid falling victim to security threats.[10][1][3][7][2]
Luca Fischer is a senior technology journalist with more than twelve years of professional experience specializing in artificial intelligence, cybersecurity, and consumer electronics. He earned his M.S. in Computer Science from Columbia University in 2011, where he developed a strong foundation in data science and network security before transitioning into tech media.
Throughout his career, Luca has been recognized for his clear, analytical approach to explaining complex technologies. His in-depth articles explore how AI innovations, privacy frameworks, and next-generation devices impact both industry and society.
Luca’s work has appeared across leading digital publications, where he delivers detailed reviews, investigative reports, and feature analyses on major players such as Google, Microsoft, Nvidia, AMD, Intel, OpenAI, Anthropic, and Perplexity AI.
Beyond writing, he mentors young journalists entering the AI-tech field and advocates for transparent, ethical technology communication. His goal is to make the future of technology understandable and responsible for everyone.
Forbes is the website of Forbes, a global media, branding, and technology company known for its journalism about business, investing, technology, and entrepreneurship. It features news, articles, and famous lists and rankings, such as the Forbes 400 of the wealthiest people in America. The website is a major platform for the company's digital content and complements the print magazine, which was founded in 1917.
Leander Ungeheuer is a technology journalist and contributor with 4 years of experience covering consumer tech, video games, and digital privacy. He is known for hands-on product testing, detailed reviews, and clear, transparent reporting.
He earned his B.S. in Computer Science from the University of Texas at Austin (2020), where he developed a strong foundation in software, hardware, and emerging digital technologies.
Leander specializes in providing insightful analyses of tech products, gaming platforms, and online privacy tools, helping readers make informed decisions in the digital world. His reporting emphasizes transparency, with clear disclosures of review samples, sponsorships, and testing methodologies.
Based in Bangalore, India, he contributes to Faharas NET, producing reviews, comparisons, and digital culture features across tech platforms such as Google, Nvidia, Microsoft, Xbox, Android, Nintendo, and popular social and gaming networks.
