Data platforms

SQL Server 2016 end of support: what it means for your business and what to do next

By the Trigno team · 27 October 2026 · 7 min read

Many growing businesses still run their reporting, finance or line-of-business systems on SQL Server 2016. Microsoft's extended support for it ended on 14 July 2026. Nothing switches off, but the risk profile has changed, and it is worth deciding deliberately what to do rather than waiting for a problem to decide for you.

What “end of support” actually means

Your SQL Server will keep running. What stops is Microsoft's regular security updates and technical support for that version. New vulnerabilities discovered from now on will not be patched by default, and if something goes wrong, Microsoft support will not help with that version.

For most businesses the practical consequences are about risk and obligations rather than day-to-day operation:

• Security: an unpatched database server is an easier target, especially if it holds customer or financial data.
• Insurance: cyber insurers increasingly ask whether you run unsupported software. An honest “yes” can affect cover or premiums.
• Compliance and audit: UK GDPR expects appropriate security measures. Running unsupported software that holds personal data is hard to justify to an auditor or the ICO after an incident.
• Suppliers: software vendors may stop supporting their products on older SQL Server versions.

How to check which version you are running

Ask whoever looks after your servers, or connect with SQL Server Management Studio and run SELECT @@VERSION. If the result says “Microsoft SQL Server 2016”, this applies to you. Check every server: it is common to find an old instance quietly running a report or an integration that everyone forgot about.

Your four realistic options

1. Upgrade in place to a supported SQL Server version. Quickest if your applications support it, but you keep owning and patching the hardware.
2. Move to Azure SQL Managed Instance or Azure SQL Database. Microsoft handles patching and backups; you pay monthly instead of buying licences and hardware. Usually the best long-term fit for small teams without a database administrator.
3. Move the server to an Azure virtual machine and buy time with Extended Security Updates. Microsoft typically offers paid Extended Security Updates for a limited period after end of support, and has historically included them at no extra charge for servers running in Azure. Check Microsoft's current terms before relying on this.
4. Use the change to modernise reporting. If the database mainly feeds reports and spreadsheets, copying the data into a modern analytics platform (Microsoft Fabric or Databricks) can make reporting much faster and opens the door to AI, while the old system is retired gradually.

Tip: Most businesses do not need a “big bang” migration. A common pattern is: protect the server now (option 3), then move reporting to a modern platform (option 4), then retire the old database.

What a sensible migration looks like

• Week 1: list every database, report, job and application that depends on the server.
• Weeks 2–3: copy the data to Azure automatically every night, without changing anything users see.
• Weeks 4–6: clean and organise the data, then switch reports over one at a time, checking figures match.
• Weeks 7–8: monitoring, cost alerts and handover, then switch off the old server.

The cost of doing this properly is usually far less than the cost of a breach, a failed audit or a week of lost reporting. The key is planning it before you are forced to.