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Windows 10 officially reached end of support on October 14, 2025. While it remains one of the most widely deployed operating systems globally, Microsoft no longer provides free security updates for standard editions.
Many businesses continue running Windows 10 in 2026 due to:
If you’re still running Windows 10, cybersecurity risk has increased and choosing the right antivirus protection is now more important than ever.
This guide outlines the best antivirus options for Windows 10 in 2026, what to avoid, and how to secure your systems properly.
| Antivirus | Works on Windows10?? | Recommended in 2026? |
|---|---|---|
Microsoft Defender |
✔️ |
With ESU |
Bitdefender |
✔️ |
Strong Choice |
ESET Endpoint Security |
✔️ |
Lightweight |
Kaspersky Endpoint Security |
✔️ |
High Detection |
Sophos Intercept X |
✔️ |
Advanced Protection |
Yes, absolutely.
Even though Windows 10 includes built-in protection via Microsoft Defender, the security landscape changes significantly after end of support.
Without ongoing OS patching:
Antivirus is no longer just “recommended.” It becomes part of a broader mitigation strategy.
Microsoft Defender remains built directly into Windows 10 and integrates seamlessly with:
If your business has enrolled in Microsoft’s Extended Security Updates (ESU) program, Defender remains a strong baseline solution.
Bitdefender GravityZone offers:
Bitdefender is consistently rated highly for detection performance and works well across mixed Windows 10 environments.
ESET Endpoint Security is known for:
Ideal for older Windows 10 hardware where performance matters.
Kaspersky Endpoint Security continues to offer strong behavioural and exploit-based protection.
Sophos Intercept X provides:
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Short answer: No. Free antivirus software is not a safe or reliable way to protect a Windows 7 system today.
While free antivirus tools can offer basic real-time scanning and malware detection on modern operating systems, they are not designed to secure an OS that has been unsupported for more than a decade.
Free antivirus versions may:
For business environments, free antivirus is not adequate post-end-of-support.
Look for behavioural detection and rollback features.
Ensure protection against memory exploits and privilege escalation.
Business environments require visibility across all endpoints.
USB scanning remains essential.
Older Windows 10 devices may struggle with heavy endpoint clients.
Antivirus alone is not enough.
Consider Extended Security Updates (ESU)
If remaining on Windows 10 short-term, ESU is strongly recommended.
Use VLAN segmentation or limited network access for non-upgraded machines.
Remove local admin rights where possible.
Especially for remote access and admin accounts.
We understand not every business is in a position where they can upgrade to the latest Windows operating system and this in fine as long as your setup is done right.
Where possible we would always recommend you update to the latest opperating system this applies to a select few industries with specific machines.
Windows 11 includes:
Want to discuss how to securely use legacy operating systems without compromising your business security.
Yes. Defender is good baseline protection, but advanced protection and management often require additional licensing or layered tools.
Only with proper mitigation strategies.
Without Extended Security Updates and layered endpoint protection, your risk increases significantly.
If you are unable to update to Windows 11 and would like to discuss your options please contact us for support.
For most businesses:
The best choice depends on infrastructure and risk profile.
Click here to book a free IT review to explore which option is best for your business
No. Free antivirus lacks enterprise controls and exploit mitigation required for unsupported systems.
Yes where possible.
Windows 11 provides:
Remaining on Windows 10 should be a temporary strategy, not permanent unless under specific circumstances.
Click here to book a quick chat with a member of our team to discuss a migration plan for your business.
Giles Cleverley founded Syn-Star in 2002 shortly after graduating from Portsmouth university with an honours degree in Business & Economics.
His extensive knowledge and experience in IT strategy and business technology solutions. He is passionate about driving innovation and delivering tailored IT support that helps UK small and medium size businesses thrive. Under his leadership, Syn-Star continues to provide cutting-edge managed IT services designed to meet the evolving needs of modern organisations.
You’re device is on an Unsupported Windows Operating System for your security, please contact us.
Team Productivity:
You and your team are able to see where they are using their time and how productive they are actually being. Also they are able to clock in and out, so really good for flexi-working.
Team Monitoring:
If you would like to know what your team is doing and how productive they are being, we are able to monitor them and create screenshots of what they are working on. This can be run in normal or stealth mode.
Book a FREE fact finding session to discuss the different options.
We proactively seek opportunities to support good causes for our community.
From sponsoring local community football teams, to engaging with charity fundraiser days, we believe it’s important to continually strive to do good for the better of others.
We have members who volunteer with youth organisations, are engaged with the Round Table, run marathons and volunteer at events where we may be needed. Every charity receives a discounted IT and Telecoms service too.
Protecting your digital data is crucial for every business and this can start with the industry-leading security we offer. The Syn-Star specialists can help with identifying any vulnerabilities within your IT systems and act accordingly to ensure cyber-attacks and data breaches are mitigated.
Your business will never fall behind with its technology when you work with Syn-Star.
We understand IT and Telecoms for your business is an investment, but it’s important to use the best resources available to enable the growth of your business. Our IT Consultancy and Virtual IT Director Services are available to support you with how you use your business technology for years to come.
Syn-Star can conduct quick and easy phishing exercises to identify people within your team who need to improve on their knowledge around fraudulent emails and how they can be alerted to these threats.
At Syn-Star, our experts can proactively work to understand exactly what software you need to support with the business operations. Whether you need a listening ear on what software to choose, or would like to seek some specialist knowledge, we’re here to help where we can.
At Syn-Star, we keep Telecoms simple. There’s so much available to help UK companies with their communications. VoIP systems, fixed landline, cloud phone systems, SIP trunking and more. Contact us for further details.
Desk phones, cordless phones or conference phones, Syn-Star can provide you with whatever you need.
From conference calling facilities to the headsets which work best for your team, we’re able to provide all the equipment you need and complete any telecoms job from start to finish.
There is no need to be in the office to make and receive phone calls from your company’s number. Our market-leading Telecoms platform gives you the flexibility of desk phones, soft phones and mobile apps as standard.
Whether your team works remotely, or perhaps staff are on a business trip anywhere in the world, calls can still be made, and people are reachable via phone wherever they go.
With a range of products, our team can support you by installing exactly what you need for internet connectivity. We work with the very best products to provide speedy bandwidths which play a part in the increased productivity of your team.
