If your business still relies on Windows 10 or Office 2019, it’s time to start the transition to Windows 11. Microsoft has officially confirmed that Windows 10 will reach its End of Life (EOL) on October 14, 2025. This means that after this date, the operating system will not receive critical security updates or support, putting unsupported devices and data at risk.
At PCS, we’re here to help Western Pennsylvania’s small and medium-sized businesses (SMBs) navigate this transition confidently. Below, we break down what EOL means, why it matters, and how your business can stay secure and compliant without unnecessary disruption.
On October 14, 2025, Microsoft will end support for all editions of Windows 10, including Home, Pro, and Enterprise. This includes feature updates and critical security patches, which protect systems from emerging cyber threats.
Once EOL arrives, Microsoft will no longer:
This means businesses that continue using Windows 10 past 2025 will be running unsupported, high-risk environments.
Whether your organization is using Windows 10 Home on employee devices or Pro/Enterprise editions on workstations and servers, every version will be affected by the 2025 deadline.
In addition to Windows 10, Microsoft Office 2019 and earlier versions are also approaching or past the end of mainstream support. While they may receive limited security fixes through extended support (typically for five years), they are increasingly incompatible with modern operating systems and cloud-based tools.
Risks of running outdated Office software include:
PCS recommends that businesses evaluate whether Office 2019 (or older) is still appropriate for secure, productive operations.
If you’re a business owner, office manager, or IT decision-maker, the 2025 deadline is more than just a calendar date — it’s a critical turning point for your company’s tech infrastructure.
Without consistent patches and updates, Windows 10 will become a target for cyberattacks. Vulnerabilities in unsupported systems are well-documented and actively exploited by hackers, putting your sensitive data and operations at risk.
Industries such as healthcare, finance, and legal services often require systems to be patched and up to date to maintain compliance. Running outdated software may violate industry regulations, leading to fines or legal exposure.
Older operating systems and Office suites may not function well with your modern apps and services. This can lead to:
The good news? There’s still time to prepare, but the window for a smooth transition is closing fast. Here’s how your organization can start planning:
Take inventory of systems still running Windows 10 or Office 2019
Identify machines that may not be compatible with Windows 11
Explore migration to Windows 11 for supported devices
Consider moving to Microsoft 365 for a modern, cloud-integrated productivity suite
Note: Not all older PCs can run Windows 11. If your hardware doesn’t meet the requirements, you’ll need to budget for replacements before 2025.
Waiting until next year could result in supply chain delays, rushed decisions, or increased costs
Upgrading too late may disrupt business operations or leave systems exposed
Whether your company has five employees or 500, PCS can create a customized roadmap for your Windows 10 and Office migration, with minimal disruption.
Network Audits and IT Assessments
Identify Windows 10 endpoints and outdated Office installations
Evaluate your readiness for Windows 11 and Microsoft 365
Upgrade Planning and Deployment
Schedule operating system upgrades on your timeline
Set up new Microsoft 365 accounts, subscriptions, and data migration
Hardware Procurement
Recommend and source Windows 11-compatible desktops, laptops, and servers
Ensure new devices meet your performance and security needs
Cybersecurity and Backup
Secure data before, during, and after migration
Update endpoint protection for new platforms
Ongoing Managed IT Support
Maintain compliance and security post-upgrade
Monitor systems for performance, patches, and threats
PCS is your trusted, local partner for IT support in Western PA. We’re to ensure your business stays protected and productive well beyond 2025.
Don’t wait until the deadline to address your tech needs. Let PCS help you avoid surprises, minimize costs, and keep your business secure through this transition.
Schedule a free consultation today
Get an IT assessment for Windows 10 and Office upgrades and learn how PCS’s IT and cybersecurity services can support your future!
Contact PCS now for expert Windows IT support — and prepare your business for what’s next.
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