In short

13 → 17
The biggest Umbraco leap in years
.NET 10
Dual LTS, supported until late 2028
1
Point of contact — no agency, no middlemen

Why you need to act now

Umbraco 13 was released in December 2023 as an LTS version. Active support ended in December 2025; the final security phase ends on 14 December 2026. After that, no more security updates arrive — a risk to both your security and your compliance.

days to EOL
14-12-2026
Umbraco 13 end-of-life
2028
Umbraco 17 supported through Q4

What changes from 13 to 17

This is not a routine update. Since version 14, Umbraco runs on a completely rebuilt backoffice — which is exactly why it pays to have a specialist handle the leap.

Umbraco 13

where you are now

  • Legacy AngularJS backoffice
  • Runs on .NET 8
  • Backoffice on a single server
  • Support ends 14 Dec 2026
Umbraco 17 LTS

where you're going

  • Modern backoffice in TypeScript and Web Components
  • Runs on .NET 10 (LTS)
  • Backoffice load-balances across servers
  • Future-proof until late 2028

My approach

  1. Upgrade scan

    I map your site, integrations and custom work and deliver a clear migration plan with a fixed price estimate.

  2. Migration on a safe staging environment

    Your live site keeps running in the meantime.

  3. Rebuild and test

    Templates, integrations and custom work are made ready for the new backoffice and thoroughly tested.

  4. Go live without downtime

    At an agreed moment, with a rollback plan.

  5. Aftercare

    Support and maintenance, short lines, one point of contact.

Why work with me

Umbraco specialist

24+ years building websites, with Umbraco as my specialism.

No middlemen

You work directly with the developer doing the work.

Fixed price upfront

After the upgrade scan you know exactly where you stand.

Ready to make the move?

Request a no-obligation upgrade scan. Within one working day you'll know what moving to Umbraco 17 means for your site.

Request the upgrade scan