Umbraco 13 End of Life
10 min read
Umbraco 13 End of Life: Why Now is the Best Time to Upgrade Your Website
If your organisation is running on Umbraco 13, now is the ideal time to start planning your next upgrade.
While December 2026 may seem some way off, the reality is that enterprise website upgrades require careful planning, technical discovery, stakeholder alignment and thorough testing. Waiting until the final months before support ends can increase costs, create unnecessary business risk and limit your upgrade options.
For organisations that rely on their website as a critical business platform, proactive planning is the smarter investment.
As an Umbraco Gold Partner, Cold Banana helps ambitious organisations like yours to deliver seamless Umbraco upgrades and migrations with minimal disruption, ensuring your website continues to perform securely, efficiently and at scale.
This guide explains what Umbraco 13 End of Life means, why it matters, and why Summer 2026 presents the ideal opportunity to begin your upgrade journey.
TLDR: Three key takeaways
Umbraco 13 reaches End of Life in December 2026
After Monday 14th December 2026, security updates, bug fixes and official support will no longer be available for Umbraco 13.
Summer 2026 is the ideal time to plan your Umbraco Upgrade
Early planning reduces project risk, improves scheduling and avoids the rush as the Umbraco End of Life stage approaches.
Upgrading creates opportunities beyond compliance
A well planned Umbraco migration can improve website performance, user experience, ease of content management for internal teams, and provide scalability for your site to grow your digital platform in tandem with your business.
When is Umbraco 13 End of Life?
Umbraco 13 reaches End of Life on Monday 14th December 2026.
As a Long Term Support release, Umbraco 13 has benefited from an extended support period, giving organisations additional stability compared to Short Term Support versions. However, once End of Life arrives, official support from Umbraco HQ will end.
This means there will no longer be:
- Security updates
- Bug fixes
- Performance improvements
- Compatibility updates
- Official technical support
For organisations operating enterprise websites, this creates an increased chance of operational and security risks over time.
The earlier you begin planning your Umbraco upgrade, the greater the flexibility you have to schedule development around business priorities rather than deadlines.
What does Umbraco End of Life mean?
The End of Life stage refers to the point at which the Umbraco software version is no longer maintained or officially supported.
Your website will continue to function after Umbraco 13 reaches End of Life. However, the platform will no longer receive ongoing maintenance or security updates from Umbraco.
For businesses, this means the responsibility for managing future risks shifts entirely to your internal teams or technology partners.
As web technologies continue to evolve, unsupported software gradually becomes more difficult to maintain. Third party integrations may stop supporting older versions and infrastructure requirements may begin to diverge from modern standards.
For enterprise organisations, remaining on unsupported software becomes increasingly expensive over time due to the increasing work pressures on internal teams to sustain pre-end of life web performance.
Why does Umbraco 13 End of Life matter for your business?
Many organisations assume they can simply continue running their existing website after support ends.
Technically this is possible.
Commercially, it becomes increasingly difficult to justify.
Key business risks include:
Increased security exposure
Unsupported software no longer receives security patches, leaving potential vulnerabilities unaddressed.
Higher maintenance costs
Resolving issues on legacy platforms often requires more development effort than maintaining supported software, thereby increasing costs to your business.
Compatibility challenges
Modern browsers, hosting environments and third party integrations continue evolving, increasing the likelihood of compatibility issues.
Reduced innovation
Development teams spend more time maintaining ageing infrastructure instead of delivering new functionality and digital improvements.
Greater business risk
The longer upgrades are delayed, the larger and more complex future migrations typically become.
For organisations investing significantly in digital growth, remaining on supported technology provides greater confidence and long term value.
Why shouldn’t you wait for your Umbraco upgrade?
Many organisations begin planning only when End of Life is approaching.
Unfortunately, this is often when agencies become busiest with upgrade projects.
Starting your migration right now during Summer offers several advantages.
Better project scheduling
By planning ahead, you have greater flexibility to align development with wider business initiatives.
More thorough planning
Discovery workshops can identify opportunities to improve performance, accessibility, content management and user experience rather than simply replacing technology.
Reduced operational risk
Projects are more likely to be completed before support ends. This avoids unnecessary time pressure and periods of development “crunch”.
Budget certainty
Planning ahead enables investment to be allocated strategically rather than through reactive emergency spending.
Opportunity for wider digital improvements
Many organisations use an Umbraco upgrade as the catalyst for improving website performance, modernising user journeys and enhancing content governance.
An upgrade should never simply be viewed as technical maintenance.
Done well, what starts as an Umbraco upgrade can become an opportunity to strengthen your digital platform for the next several years.
Why upgrade to Umbraco 17?
For most organisations currently running Umbraco 13, Umbraco 17 represents the logical upgrade destination.
It delivers improvements across developer experience, editorial workflows, platform performance and long term maintainability.
Benefits include:
- An improved content editing experience
- Better performance and scalability
- Modern development architecture
- Continued investment from Umbraco HQ
- Enhanced future upgrade pathways
- Improved support for enterprise digital platforms
Rather than making incremental upgrades every few years, many organisations prefer upgrading directly to the latest Long Term Support release to maximise longevity.
Why is Umbraco 17 the latest Long Term Support version?
Umbraco follows a predictable release cycle consisting of:
- Long Term Support releases for organisations prioritising stability
- Short Term Support releases for businesses wanting earlier access to new features
Long Term Support versions receive significantly longer support periods, making them the preferred choice for enterprise websites.
For most organisations, this means fewer major upgrades while continuing to receive ongoing security updates and platform improvements.
If your website supports critical business operations, customer services or lead generation, choosing the latest Long Term Support version offers the greatest long term value.
Discover more about the benefits Umbraco 17 can offer your business in this Cold Banana blog!
Why choose Cold Banana for your Umbraco Upgrade or Umbraco Migration?
An Umbraco upgrade is about much more than moving from one software version to another.
It requires technical expertise, strategic planning and a deep understanding of how enterprise websites support wider business objectives.
At Cold Banana, we’ve been an Umbraco Gold Partner since 2019; with our Umbraco experts having decades of collective experience. Leveraging this experience, we approach every Umbraco upgrade and Umbraco migration with long term digital performance in mind.
Our team works collaboratively with enterprise organisation stakeholders across technology, marketing and leadership teams to ensure every upgrade delivers measurable business value.
Whether you require a straightforward version upgrade or a complete website transformation, we deliver projects with careful planning, transparent communication and proven technical expertise.
Our services include:
- Full Umbraco migrations
- Version upgrades
- Technical discovery
- Website audits
- Performance optimisation
- Accessibility improvements
- Security reviews
- Ongoing support and optimisation
Why does Cold Banana's Umbraco Gold Partner status matter?
As an Umbraco Gold Partner, we're certified by Umbraco themselves to have demonstrated extensive experience delivering successful Umbraco solutions.
This accreditation reflects proven technical capability, ongoing investment in the Umbraco ecosystem and a commitment to delivering high quality digital experiences.
For clients, this provides confidence that your website is being delivered by specialists who understand both the technology and the wider commercial objectives behind an Umbraco powered website!
Frequently Asked Questions About Umbraco 13 End of Life
Is Umbraco 13 a Long Term Support version?
Yes. Umbraco 13 is a Long Term Support release, providing an extended support lifecycle compared with Short Term Support versions. However, that support ends on Monday 14th December 2026.
Can I continue using Umbraco 13 after its End of Life stage?
Yes. Your website will continue operating, but it will no longer receive security updates, bug fixes or official support from Umbraco. Remaining on unsupported software increases both operational and security risks over time.
How long does an Umbraco migration take?
Project timescales vary depending on website complexity, integrations and redevelopment requirements. Enterprise migrations often benefit from several months of planning before development begins.
Should I upgrade directly from Umbraco 13 to Umbraco 17?
For many organisations, upgrading directly to the latest Long Term Support version provides the greatest long term value by extending support and reducing the frequency of future upgrades.
What support options exist after Umbraco 13 reaches End of Life?
You can continue working with an experienced Umbraco partner for maintenance and support. However, official product updates from Umbraco HQ will no longer be available, making an Umbraco upgrade the recommended long term strategy.
Is an Umbraco upgrade the same as a website migration?
Not always. Some projects involve a straightforward platform upgrade, while others include content migration, redesign, infrastructure changes, or wider digital transformation. The right approach depends on your business objectives.
When should I start planning my Umbraco upgrade?
The best time is now. Beginning discovery during Summer 2026 gives your organisation sufficient time to plan, budget and deliver the project before Umbraco 13 reaches End of Life, reducing risk and creating opportunities to improve your digital platform.