Fusion 360 App Sign In Failure

[oglesbyjY94F]

We are unable to successfully launch any instance of existing or new Fusion 360 installs without a "Sign In Failure" error on our Windows 10 student/staff PCs. After attempting the steps listed in the help walkthrough Guide: "Sign in Failure: There was an error while logging into Fusion 360". We have verified ports 80 and 443 are open. We have ensured firewall whitelists match those provided in the help guide. We have disabled anti-virus software. Students and staff are still experiencing Sign In Failure. As an alternative test, I have installed Fusion 360 on a device that does not have anti-virus software and then connected it to a personal hotspot and STILL EXPERIENCE Sign In Failure REGARDLESS of network/firewall/internet filter/anti-virus. I have provided .zip log files. District ethernet network and personal hotspot connected devices both fail during the Service Utility Network Diagnostics test for sites https://notifications.api.autodesk.com/health and https://www.mcmaster.com/shell.aspx

Please help! We're essentially dead in the water as of right now...

[RajkumarIlanchelian]

@oglesbyjY94F Thank you for the logs. Two things to try:

1. https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Fusion-360-WinErro... follow this article and see if that helps.

2. If not:

1. Make sure that Fusion installer is not running in task manager
2. Go to C:\Users\user\AppData\Local\ Autodesk\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

[oglesbyjY94F · Accepted solution]

The resolution in our case, was to re-download the installer and
re-install the Fusion 360 app for all existing instances.