The upcoming end of Microsoft support deadline of October 14, 2025, will have a significant impact on the business environment. For organizations, this means preparing their IT infrastructure for this change to avoid downtime, increase security, and ensure business process continuity.
It is crucial to conduct a tool and system audit and develop a migration plan—ideally with the support of experienced MScloud specialists. This challenge applies to both large corporations and small and medium-sized businesses still using Microsoft solutions affected by the end of support.
What Microsoft systems and solutions are losing support in October 2025?
According to an official Microsoft announcement, technical and security support for the following products will end on October 14, 2025:
- Windows 10 (all editions, including Enterprise). Mainstream support ends on October 14, 2025. However, security support can be extended until October 2028 through the paid Extended Security Updates (ESU) program.
- Office 2019 - Mainstream support ended on October 10, 2023, and extended (security) support will end on October 14, 2025.
- Exchange Server 2019 - Mainstream support ends on October 14, 2025, and extended support will continue until January 9, 2029.
- Project 2016 receives extended support until July 14, 2026, and Project 2019 until October 14, 2025.
- Visio 2016 receives support until July 14, 2026, and Visio 2019 until October 14, 2025.
- Skype for Business Server 2019 - Extended support ends on October 14, 2025.
It's important to remember the difference between mainstream and extended support, and that extending support (e.g., through ESU) isn't automatic and requires additional action on the part of the user or organization.
After these dates, these products will no longer receive any security patches, functional updates, or technical support. This means increased risk of cyberattacks, vulnerabilities, and lack of compatibility with modern IT solutions.
The importance of ending support for businesses
The end of support for key IT systems is a moment that carries significant consequences for any organization's operations. Companies that ignore this change may face significant challenges, both in terms of security and maintaining smooth business operations.
- Risk of Security Breaches: Lack of security updates exposes company data to hackers and ransomware. Companies using outdated software are prime targets for cybercriminals.
- Regulatory Compliance: After October 14, 2025, companies may struggle to meet requirements such as GDPR and ISO if they operate on unsupported systems.
- Impact on Innovation: An outdated IT environment inhibits the implementation of new technologies such as automation, artificial intelligence, and cloud solutions.
- Maintenance Costs: Maintaining unsupported systems generates higher expenses – both due to the need to purchase external support and potential losses resulting from downtime or data loss.
Recommended migration paths
The first step is to choose the recommended migration path tailored to your organization's specific needs. Microsoft 365 E3 or Microsoft 365 Business Premium will provide the most comprehensive capabilities, offering not only Windows 11 Enterprise but also the latest office applications and Exchange Online.
For Exchange email, consider migrating to Exchange Online or the appropriate Microsoft 365 or Office 365 plans.
Skype for Business users should take advantage of this opportunity to migrate to Microsoft Teams, gaining modern communication and collaboration tools.
For those using Project and Visio, we recommend implementing Planner, Project Plan 3, and Visio Plan 2, which will enable effective project management in a cloud environment.
This approach guarantees not only smooth operation but also access to the latest solutions supporting teamwork and productivity.
How to prepare your company for safe migration?
Every organization should begin with a comprehensive IT audit. It's especially important to inventory all devices, licenses, and applications that may be affected by the end of support.
- Developing a migration strategy: Preparing a transition plan to new solutions, taking into account the timeline and budget, facilitates a safe technological transformation of the enterprise.
- Team training: New systems and tools require employees to acquire new skills, so it's important to ensure appropriate training and implementation consultations.
- Testing and implementing new environments: Before fully transitioning to new solutions, it's worth testing them in production conditions to minimize the risk of failure.
Alternatives for companies not yet ready to migrate
Not all organizations are ready for an immediate transition to the cloud or a full system migration. In such cases, developing a transition strategy that ensures security, compliance, and business continuity is crucial. MScloud offers individually tailored support packages that take into account the specifics of the IT environment, business needs, and the pace of a given company's digital transformation.
As part of the available solutions, companies can take advantage of options provided by Microsoft, such as:
- Extended Security Updates (ESU) for Windows 10 – providing security updates until October 2028,
- Office LTSC 2024 (Standard, Professional Plus), Project Professional 2024, Visio LTSC 2024 – new software versions with long-term support,
- Exchange Server Subscription Edition – a solution for on-premises environments, available from the third quarter of 2025.
MScloud's flexible offerings enable you to develop a plan tailored to your organization's current capabilities – whether it's maintaining your on-premises environment, implementing security bridges, or preparing for a future cloud migration.
Summary – take care of your company's future today
The end of Microsoft support in October 2025 is not just a formality, but above all, a catalyst for modernizing enterprise IT infrastructure. Early preparations minimize risk and allow for the potential of the latest technologies to be tapped. Companies that develop a migration strategy now will ensure not only data security but also their competitiveness in the digital market.