topic Re: Fusion Sign in won't open a Webbrowser on MacBook Air M4 in Fusion Support Forum

Fusion Sign in won't open a Webbrowser on MacBook Air M4

tbhl05 — Fri, 17 Apr 2026 23:24:18 GMT

Hi everyone,

I’m having trouble signing in to Autodesk Fusion 360 on my Mac and I’m stuck at the login step.

When I click “Sign In” inside Fusion 360, it’s supposed to open a browser window for authentication—but nothing happens at all. No browser window opens, no error message, just nothing.

Here’s my setup:

macOS: latest version (Tahoe 26.4.1)
Browser: Safari (set as default)
No VPN, no Pi-hole, no network filtering

What I’ve already tried:

Checked that Safari is set as the default browser
Disabled popup blockers and extensions
Restarted my Mac
Reset Fusion 360 login/cache by removing the “Web Services” folder
Tried switching default browser to Chrome and back to Safari
Verified that macOS isn’t blocking anything in Privacy & Security settings
Signed into Fusion Insider
Manually deleted local Fusion-related files (including something like lockinservice.db)
Used the Fusion Service Utility (Reset & Repair)

I’ve also already spoken with a few support agents via live chat, but they couldn’t resolve the issue. They said they would escalate it to a higher-level support specialist, and since then I’ve been waiting for a response. Unfortunately, I really need to access my files and continue working, which is why I’m posting here now.

One more important detail: this issue only started after I switched to a new Mac about a week ago. On my old Mac, everything still works perfectly.

Still, clicking “Sign In” does absolutely nothing.

Has anyone experienced this before on macOS?
Could this be related to permissions, or Fusion not being allowed to open external links?

Any help or ideas would be really appreciated!

Thanks in advance

Re: Fusion Sign in won't open a Webbrowser on MacBook Air M4

RajkumarIlanchelian — Sat, 18 Apr 2026 01:37:14 GMT

@tbhl05 Certainly some permissions/ privacy setting on the new Mac that could be the issue

https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Sign-in-in-Fusion-360-does-not-open-a-browser-pop-to-complete-the-sign-in-procedure.html

Look at the above article and can you run especially the "Check Autodesk identity manager " section.

Re: Fusion Sign in won't open a Webbrowser on MacBook Air M4

tbhl05 — Sat, 18 Apr 2026 08:27:44 GMT

Thanks for the suggestion!

I went through the article and specifically followed the “Check Autodesk Identity Manager” section, but unfortunately it didn’t solve the issue.

What I noticed:

AdskIdentityManager is not showing up in the Activity Monitor at all
I also checked the temp directories mentioned, but the related files are not present there either

So it seems like the Identity Manager might not even be running or getting triggered properly on my system.

Any idea why it wouldn’t start or appear at all?

Appreciate the help!

Re: Fusion Sign in won't open a Webbrowser on MacBook Air M4

RajkumarIlanchelian — Fri, 24 Apr 2026 01:26:45 GMT

@tbhl05 Apologies for late reply. Yes, When you launch Fusion and go to activity monitor, you should see Autodesk identity manager running. Can you close Fusion , restart your Mac and launch Fusion again and see if you see identity manager?

Betreff: Fusion Sign in won't open a Webbrowser on MacBook Air M4

tbhl05 — Sat, 25 Apr 2026 01:04:39 GMT

@RajkumarIlanchelian No worries.

I wanted to start fusion before trying that and somehow the browser window appeared.
I don't really know why but I am logged in now.

Thanks a lot for your help.

Re: Fusion Sign in won't open a Webbrowser on MacBook Air M4

lauri_barnhart — Mon, 27 Apr 2026 15:00:49 GMT

Hello @tbhl05, thanks for posting in the community!

Did the information provided by @RajkumarIlanchelian help? Also, did you see the additional request from @RajkumarIlanchelian?

If yes, please mark the reply as the accepted solution.

This helps other community user find a solution to similar problems.

If not, please provide an update so other members can jump in with further suggestions.

Regards,

Lauri | Community Manager