If your business is still using Windows 10, the Windows 10 End of Support is something you cannot afford to ignore. Microsoft ended support for Windows 10 on 14 October 2025, meaning the operating system no longer receives free security updates, bug fixes, or technical support.
While your computer will continue to work, it will gradually become more vulnerable to cyber threats. As a result, businesses that continue using unsupported systems could expose themselves to unnecessary risks, including data breaches, ransomware attacks, and operational disruption.
So, what does the Windows 10 End of Support mean for your business, and what should you do next?
What Does Windows 10 End of Support Mean?
When Microsoft ends support for an operating system, it stops providing regular security updates and software fixes.
Importantly, this does not mean your computer suddenly stops working. However, it does mean that newly discovered vulnerabilities may not be patched, making unsupported devices increasingly attractive targets for cybercriminals.
Microsoft recommends upgrading eligible devices to Windows 11 or considering its Extended Security Updates (ESU) programme as a temporary solution for businesses that need additional time to transition.
You can read Microsoft’s official guidance here:
https://support.microsoft.com/en-gb/windows/windows-10-support-has-ended-on-october-14-2025
Why Is This a Cybersecurity Concern?
Cybersecurity is no longer just an issue for large corporations. In fact, small and medium-sized businesses are increasingly targeted because they often have fewer security resources in place.
Consequently, running unsupported software can create unnecessary vulnerabilities.
Potential risks include:
- Increased exposure to malware and ransomware attacks
- Greater risk of data breaches
- Reduced compatibility with modern security software
- Difficulties meeting client and supplier security expectations
- Increased costs if a security incident occurs
Furthermore, a cyberattack rarely affects just one device. A compromised computer can potentially provide access to emails, cloud systems, financial records, and sensitive client information.
Therefore, businesses should view unsupported operating systems as a genuine business risk rather than simply an IT issue.
How to Check if Your Business Is Affected
If you are unsure whether your business is still running Windows 10, now is a good time to check.
Start by:
- Reviewing all business computers and laptops
- Identifying devices still running Windows 10
- Checking whether those devices meet Windows 11 requirements
- Creating a plan to upgrade or replace unsupported devices
Although this may seem like a significant task, planning ahead is far easier than dealing with the consequences of a security incident.
Cybersecurity Is About More Than Technology
Many business owners assume cybersecurity is solely the responsibility of their IT provider. However, protecting business information requires a much wider approach.
For example, businesses should also:
- Use strong passwords and multi-factor authentication
- Do not re-use passwords
- Keep an electronic wallet if you have trouble remembering your various passwords
- Keep software updated
- Train employees to recognise phishing emails
- Back up important data regularly
- Review access permissions and security procedures
Together, these measures create multiple layers of protection that help reduce risk.
Why This Matters to Us at JDH Accountants
As accountants, we handle highly sensitive information every day. This includes financial records, payroll data, identity documents, tax returns, and confidential business information.
That is why cybersecurity remains a key priority for our firm.
We continually review our systems, processes, and technology to help ensure client information remains protected. Additionally, we stay informed about developments such as the Windows 10 End of Support because they can have a direct impact on the security of the businesses we work with.
After all, safeguarding client data is about much more than meeting compliance requirements—it’s about maintaining trust.
The Bottom Line
The Windows 10 End of Support does not mean every Windows 10 computer becomes immediately unsafe. However, it does mean businesses should carefully assess the risks of continuing to use unsupported systems.
The longer a device remains unsupported, the greater the potential exposure to security vulnerabilities.
Therefore, if your business is still running Windows 10, now is the time to review your options, plan your upgrade path, and strengthen your overall cybersecurity measures.
Taking action today could help protect your business, your data, and your reputation tomorrow.
If you would like advice on improving your business processes, reducing risk, or working with proactive accountants who look beyond compliance, get in touch with the team at JDH Accountants.