Windows 10 support ended on October 14, 2025. For businesses still using Windows 10 PCs, the practical issue is not that the computers immediately stop working. It is that they no longer receive the normal security updates that help protect them against newly discovered vulnerabilities.
For organizations in Calgary, Edmonton, and Vancouver, this is a good time to identify every remaining Windows 10 device, decide which machines can move to Windows 11, and replace the ones that cannot. A documented plan is usually safer and less disruptive than waiting for a hardware failure, compliance question, or security incident to force the decision.
What does Windows 10 end of support mean for a business?
Microsoft ended support for Windows 10 Home and Pro on October 14, 2025. Microsoft’s lifecycle guidance means that devices on those editions no longer receive regular security updates, non-security updates, or technical support. The operating system can still run, but the risk increases over time as attackers learn about vulnerabilities that will not be patched for Windows 10.
That matters because endpoints are where people open email, access Microsoft 365, sign in to cloud applications, work with client files, and connect to business networks. One unpatched workstation can become the easiest path into an otherwise well-protected organization.
Why this is a cybersecurity issue, not just an IT refresh
Replacing an aging PC is often treated as a budgeting or performance decision. After end of support, it is also a security and business-continuity decision. Insurance questionnaires, client security reviews, and internal risk assessments increasingly ask whether systems are supported and patched.
- Unpatched vulnerabilities: New weaknesses can be discovered after support ends, without a routine Windows 10 fix to deploy.
- Higher ransomware exposure: Older, unpatched endpoints are attractive targets when attackers look for a foothold.
- Compliance and cyber-insurance pressure: Unsupported operating systems can raise questions during a security review or claim investigation.
- Compatibility problems: Newer security tools, browsers, drivers, and line-of-business applications may gradually stop supporting older devices.
The practical Windows 10 to Windows 11 checklist
The right path is different for every organization, but the first step is always visibility. Before buying hardware or scheduling upgrades, build an accurate device list and identify where the business risk is highest.
- Inventory every Windows 10 device. Include office PCs, laptops, shared workstations, and remote employee devices.
- Check Windows 11 eligibility. Confirm hardware, TPM, processor, memory, storage, driver, and application requirements.
- Prioritize high-risk devices. Start with machines used for finance, administration, privileged access, client data, or remote work.
- Back up before change. Confirm important files, user profiles, and business applications have a tested recovery path.
- Plan the rollout around operations. Schedule work to reduce downtime and make sure users know what to expect.
- Retire old devices securely. Wipe or destroy data appropriately before recycling, donating, or disposing of hardware.
Can a business keep using Windows 10?
A business can keep using Windows 10, but it should be a temporary, documented exception rather than the default plan. Some specialized software, industrial systems, or legacy hardware may require more time. In those cases, the organization should apply compensating controls: isolate the device where possible, restrict administrative access, keep endpoint protection current, confirm backups, and set a clear retirement date.
For most standard business laptops and desktops, moving to Windows 11 or replacing incompatible hardware is the more sustainable approach.
How 403Tech helps businesses plan the transition
403Tech helps organizations across Calgary, Edmonton, and Vancouver turn a broad end-of-support issue into a practical project plan. We can assess your device fleet, identify upgrade-ready and replacement candidates, coordinate the rollout, protect data during the transition, and make sure the new environment is configured with the right security controls.
The goal is not simply to install a new operating system. It is to reduce risk while helping your team stay productive.
Windows 10 end-of-support FAQs
When did Windows 10 support end?
Microsoft ended support for Windows 10 Home and Pro on October 14, 2025.
Will Windows 10 stop working after end of support?
No. Windows 10 devices can continue to run, but they no longer receive the normal security updates and support that help protect them from newly discovered threats.
Can my business upgrade existing PCs to Windows 11?
Many PCs can be upgraded, but eligibility depends on the device hardware, security features, drivers, and business applications. An inventory and compatibility review should come first.
Do Calgary, Edmonton, and Vancouver businesses need managed IT help for this?
Not every business needs outside help, but managed IT support can make a multi-device transition safer and more efficient—especially when there are remote workers, Microsoft 365, specialized applications, compliance requirements, or limited internal IT capacity.
Source: Microsoft Windows 10 Home and Pro lifecycle information.