unable to connect to internet please check your network connection.

[noel.fabro]

Hello

I am getting this error when I try to open up Fusion 360

unable to connect to internet

please check your network connection. you need to sign into your autodesk account to use fusion360

well obviously my internet is working. i am using the same pc to post this question in the forum that i am having problems opening fusion 360

as soon as i open fusion360, this error comes up, so how can i authenticate myself?

thanks in advance for your help

[tomasz.kasperek]

Hi, @noel.fabro

There may be several reasons for the internet connection error message.

I suggest:

Solution:

Install Fiddler and follow the configuration as below.  
https://knowledge.autodesk.com/search-result/caas/sfdcarticles/sfdcarticles/Establish-an-Internet-co...

Solution:

1. On the problematic computer, close the Autodesk product and Internet Explorer.
2. Download the Fiddler web debugging tool.

             http://www.telerik.com/download/fiddler

1. Install Fiddler on the problematic computer and start it.
2. In the Fiddler,  under the Tools menu, choose Fiddler Options.
3. In the Fiddler Options dialog box, select the HTTPS tab and check Decrypt HTTPS Traffic check box and click OK.

NOTE:  You will need to accept and trust the Fiddler Security Certificate.

6. Under the Tools menu, choose WinINET Options.
7. When Internet Properties dialog pops up, open Connection tab, click on LAN settings.
8. On LAN settings dialog check Use a Proxy Server for your LAN and click Advanced button.
9. In Proxy settings dialog, verify that in very first field for HTTP you have 127.0.0.1 IP address and 8888 port has been set and if it is not, you will need to set it.
10. In the Proxy settings dialog, check Use the same proxy server for all protocols check box.

Let me know please, if was this helpful?

Regars, 

[npeter83]

Hi,

I have exactly the same message and situation when I start to fusion360. And I obviously have net conn.

What I tried so far:

- based on KB entry, I found a fusion360 cleanup script - I run that and I rerun the installation -> did not help

- disabled (even uninstalled) 3rd party virus/firewall stuff -> did not help

- disabled win defender stuff -> did not help

- disabled 2-way authentication in account -> did not help

- I can reach "myhub" via browser w/o any issue

- I'm using win10 64 bit

It started (just about) a week ago, at that time I could start fusion but it always displayed "not connected to internet, you are working offline". After the above mentioned steps I cannot start the fusion anymore, its always say no connection....

Any advice about next steps? Is there a specific log file, where I can see some details, where the app wants to connect during startup?

Based on another thread (https://forums.autodesk.com/t5/fusion-360-support/servers-down/td-p/8379903/page/2) I found an url via fiddler, which I have no access (or at least http response is only 503)

Can I assume that code 503 "service unavailable" is an issue on your side?

[npeter83]

Forget it 🙂 a simple router restart solved this. I do not understand why but at least now I can use fusion again.

[Anonymous]

Interesting that a simple reboot fixed your issues.  I found the culprit of my issue that generates similar issues you were seeing.

Something happened just recently with their login server (and I think their SSL certificate as well).  

See this: https://forums.autodesk.com/t5/installation-licensing/can-t-log-in-to-fusion-360/m-p/8384727/thread-...

Mine did the same thing (I run a hardened system).  I was using Fusion360 just fine up until just a couple weeks ago.  Something on Autodesk's end changed (for the bad).