Can't sign into Microsoft Fabric

carbonstereotype

I'm unable to sign into Microsoft Fabric and I've tried disabling Content Blockers, Tracking Prevention and enabling Compatibility Mode.

Visit https://app.fabric.microsoft.com/
Sign in using a Microsoft account
Page is redirected to https://app.fabric.microsoft.com/signin#code=<snip>
Page is blank with an information in the web console: Prevented https://app.fabric.microsoft.com/signin#code=<snip> from accessing QueryParameters
Cannot continue

I should be able to sign into the web site.

macOS Sequoia 15.7.5, Orion Version 1.0.8 (147.1), WebKit 625.1.8

Sequoia (15)

dino

carbonstereotype can you please check if the page works fine with compatibility mode enabled, or with new clean profile? Also, please share list of active web-extensions, as this looks like more related to some specific web-extension.

We tried this locally, but unable to reproduce:

carbonstereotype

dino new profile, no extensions, compatibility mode doesn't help. Here's the full sign in flow to the blank page with console.

dino

carbonstereotype Thanks for detailed flow, we will investigate this issue and will try fixing this soon.

ashbak

Thank you kindly for raising this defect. I can confirm I'm also experiencing exactly the same issue. I have tried everything including disabling

Complete OS reinstall (completely fresh) - MacOS26 and MacOS27
Content Blocker
Enhanced Tracking Protection
Any custom CSS/JS
Any browser extensions for this site
Disabled extensions
Cleared cookies
Tested in Private Window

I can confirm PowerBi does work in standard Safari and Safari Technology Preview