topic Cannot Launch Fusion - November 2025 in Fusion Support Forum

Cannot Launch Fusion - November 2025

steven_laforce — Mon, 10 Nov 2025 00:29:17 GMT

Hello,

As described in the Fusion support threads, clicking the Fusion application results in a short "loading" wheel, and no application ever appears. I can load the app via "Run as Administrator" Mode, but it will hang on the loading screen indefinitely. If I click anywhere on "Run as Administrator", it simply licks up and crashes. The application worked fine just a few days ago. I did install a new 10GbE NIC into my PC which I highly doubt would cause this, but I did remove it, remove the drivers, and unfortunately no luck.

I have tried every possible solution I've seen on the forums, including clean installing, NIC priority in Windows Networking (when I had the 10GbE installed). The PC is up to spec and fully updated.

Specs: AMD 9800 X3D, 48GB DDR5, RTX 4090, NVME Storage. Win Update and Nvidia drivers fully up to date.

Any help to get back to modelling would be much appreciated. This is on the free Non-Commercial version. I have looked at logs, if someone can direct me which the appropriate logs are I can upload them.

Re: Cannot Launch Fusion - November 2025

RajkumarIlanchelian — Mon, 10 Nov 2025 00:57:37 GMT

@steven_laforce Can you please try 2 things for me?

Can you please try this?

1. Make sure that Fusion installer is not running in task manager
2. Go to %localappdata%\Autodesk\ then DELETE the following folders – Webdeploy, Web Services, Identity services, Autodesk Fusion 360 ((IF you do not have any other Autodesk products installed, delete the Full Autodesk folder)
3. Delete the shortcut that is used to launch Fusion
4. Restart your machine
5. Do not use the same Fusion installer. Can you please download the installer again
6. Now install again

Now, if this does not work, can you please collect log files for me?

Go to add/remove programs- select Fusion - MODIFY
This will launch the service utility
gather system info
Attach the Fuiondiagnosticslogs.zip

Re: Cannot Launch Fusion - November 2025

steven_laforce — Mon, 10 Nov 2025 01:27:29 GMT

Hi mate,

Thanks again, that worked. I swear I did these exact steps the last two times. The only different thing I did this time was purge both App Data Local, and App Data Roaming, both of which had AutoDesk folders, which wasn't explicitly in these instructions.

Just to note, before (when I had the issue), trying to use "Modify" under Windows programs would also not launch the Service Utility.

Anyways, thanks again.

Steven