FME 2026.2: Fix authentication or your workflows will break
Safe Software continually improves FME to meet modern security standards. As part of this, Safe is following industry best practice by removing Embedded Browser authentication from FME 2026.2. This change will affect many workspaces across both FME Form and FME Flow, with a risk of widespread workflow failures if action is not taken.
Here is what you need to know.
What’s changing?
FME has historically supported Embedded Browser authentication as a way for workspaces to connect to services that use OAuth. In FME 2026.2, this authentication method is being removed.
Embedded Browser authentication is vulnerable to man-in-the-middle (MITM) attacks, and the broader technology industry has moved away from it in favour of more secure alternatives.
What’s affected?
Any FME workspace that currently uses Embedded Browser authentication to connect to an external service will be affected. This includes connections to:
- Microsoft SharePoint
- Dropbox
- ArcGIS
- Microsoft Azure
FME workspace authors may not know which authentication method their connections use, and the only way to confirm is to review each workspace individually. As a rule of thumb, any workspace created before FME 2025.2 is likely using the Embedded Browser method.
What happens if you do nothing?
Affected workspaces will not break immediately on upgrade. The issue occurs when credentials next need to be refreshed. At that point, authentication will fail and the workspace will break.
For automated workflows and data integrations, this could mean processes failing without an immediately obvious cause.
How do you fix it?
The fix requires updating each affected workspace to use a supported authentication method. There is no central fix.
Safe Software has published documentation on the change, and it explains what to do. The challenge is doing it consistently across real-world estates.
For teams with a larger number of workspaces, or where workspace authors need support to do this confidently and correctly, structured training is a more reliable option.
How can Miso help?
Miso has developed a half-day training session specifically designed to prepare FME users for this change. Our FME Authentication Training is online, instructor-led, and covers:
- Understanding the authentication change and why it is happening
- How to identify which of your workspaces are affected
- How to reauthenticate workspaces using supported methods
- Best practice for FME authentication going forward
This is a practical, hands-on session where you’ll start updating your workspaces on the day, with our team there to support you throughout.
Find out more or get in touch to book your place.