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How to Keep Using Office 2016 and 2019 Securely When Microsoft Stops Support After October 2025?

A major deadline is on the horizon for many computer users. On October 14, 2025, Microsoft will officially end its support for the 2016 and 2019 versions of its popular Office suite. This includes well-known applications like Word, Excel, and PowerPoint. While your software will not stop working on that day, the protection that keeps it safe will disappear. This date marks the final time these programs will get security updates from Microsoft.

How to Keep Using Office 2016 and 2019 Securely When Microsoft Stops Support After October 2025?

For home users and businesses, this creates a serious dilemma. Continuing to use software that is no longer supported can open the door to significant problems. Without official patches, your computer and your personal information become much more vulnerable. It is like leaving your digital front door unlocked. Microsoft’s advice is to upgrade to a newer version or subscribe to its Microsoft 365 service. These are valid options, but they often come with new costs and learning curves.

However, a different path exists. A company called ACROS Security has developed a service named 0patch that offers a lifeline. It is designed to keep your current Office 2016 and 2019 programs secure well after the 2025 cutoff. This guide will walk you through what the end of support truly means and how you can make an informed choice that is right for you.

The Real Risks of Using Unsupported Software

Understanding what “end of support” means is critical because it directly relates to your money and your life—or, in this case, your digital life and financial security. When Microsoft stops supporting a product, it doesn’t just stop offering customer service. It stops releasing updates that fix security holes.

Hackers and cybercriminals are always searching for these weaknesses, called vulnerabilities. When they find one in an old version of Office, they can create malicious programs to exploit it. Because Microsoft is no longer fixing these holes, anyone using the outdated software becomes an easy target.

The dangers are not just theoretical; they can have real-world consequences:

Security Threats

A newly discovered flaw could allow someone to steal sensitive information directly from your documents. This could include financial records, personal data, or confidential business plans. It could also lead to ransomware attacks, where criminals lock up your files and demand payment to get them back.

Compliance Problems

Many industries, such as healthcare, finance, and legal services, have strict regulations about data protection. Using unsupported software can violate these compliance standards, leading to heavy fines and a loss of trust from clients.

Productivity Loss

Beyond security, end of support also means no more bug fixes. A glitch that repeatedly crashes Excel or corrupts a Word document will never be fixed. This can lead to lost work and growing frustration over time.

Microsoft’s proposed solution is for users to migrate. They encourage moving to Microsoft 365, a subscription service that ensures you always have the latest, most secure version. Another option is purchasing a new perpetual license, like Office 2024. While effective, these paths may not be ideal for everyone, especially those who are happy with their current software and want to avoid additional costs.

A Powerful Alternative: Extending the Life of Your Software

What if you are not ready to switch? This is where 0patch, created by the cybersecurity firm ACROS Security, provides a compelling alternative. Instead of forcing you to abandon functional software, 0patch offers to continue securing it.

Starting in October 2025, 0patch will begin providing its own security patches for Microsoft Office 2016 and 2019. The company has committed to supporting these versions for a minimum of three additional years. This support could be extended even longer if enough users show interest. This service acts as a bridge, allowing you to continue using the software you know and trust without exposing yourself to unnecessary risks.

This solution is particularly beneficial for businesses that have built their workflows around these specific Office versions and find the prospect of a company-wide upgrade daunting and expensive. It gives them breathing room to plan for a future transition on their own terms.

How Micropatching Keeps You Safe

The technology behind 0patch is quite different from Microsoft’s traditional update process. It relies on a concept called “micropatching.”

Think of a Microsoft update as replacing an entire window in your house to fix a small crack in the glass. It is a large, often cumbersome process that might require you to restart your computer. In contrast, a micropatch is like placing a tiny, transparent, but incredibly strong piece of tape over that crack. It fixes the specific problem without disrupting anything else.

Here’s how it works in practice:

  1. Installation: You install a small program called the 0patch agent on your computer. This agent runs quietly in the background using very few resources.
  2. Monitoring: The agent watches the applications you use, like Word or Excel.
  3. Instant Protection: When an application starts, the agent checks its database for any known vulnerabilities. If a weakness exists, the agent applies a tiny, in-memory fix—the micropatch—before the program’s vulnerable code can even run.

This process is seamless and invisible to the user. The patches are applied and removed in real-time as you open and close programs. There are no downloads, no installations, and no reboots required. The micropatches are so small they are delivered to the agent almost instantly, ensuring you are protected as soon as a fix is available.

A “Patching Jackpot” for Windows 10 Users

The value of 0patch extends beyond the Office suite. The end-of-support date for Microsoft Office coincides with the same deadline for the most popular version of Windows 10, version 22H2. This means that on October 14, 2025, many computers will face a double threat: an unsupported operating system and an unsupported productivity suite.

ACROS Security offers a solution for this as well. A single 0patch license provides security coverage for both Windows 10 22H2 and Office 2016/2019 on the same machine. This creates a comprehensive safety net for users who want to maximize the lifespan of their current hardware and software. Furthermore, the service also includes protection against many “zero-day” threats—vulnerabilities that are discovered by attackers before the software vendor has a chance to fix them.

Evaluating the Cost

For many, the decision comes down to price. ACROS Security offers a straightforward pricing model for 0patch, making it an attractive financial alternative to a full software upgrade.

  • Free License: This license is available for personal use, educational institutions, and trial purposes. It provides a basic level of protection, ensuring even non-paying users can secure their systems against some critical flaws.
  • Pro License: For approximately €25 (plus VAT) per year, the Pro license unlocks the full suite of protections. This includes patches for all supported software, including Office and Windows, as well as proactive defense against many zero-day exploits.

When you compare this annual fee to the cost of a new perpetual Office license or an ongoing Microsoft 365 subscription, the savings can be substantial. It presents a budget-friendly option for individuals and businesses to remain secure while deciding on their long-term strategy. You are no longer forced into an immediate, and perhaps unwanted, expense. Instead, you gain control over your timeline and your budget.