unable to update

[Achernar22]

Normally I have had no problems updating classic until a few weeks ago. When I attempt to update Classic, I receive the 'Bad request 400'. (Windows 10) I can connect to the host but receive many script errors due to my version 3.3.10 and his 3.3.15. (need to update)

Updating Unity has no problem.

Checked over firewall (Windows Defender) which had the following listed under 'allowed apps and features':

'Fantasy Grounds'
'fantasy grounds'
'Fantasy Grounds Updater'

All are checked 'private' allowing them to go through the firewall. Path for 'Fantasy Grounds Updater' is C:\Program Files (x86)\SmiteWorks\Fantasy Grounds\FantasyGroundsUpdater.exe which I think is fine.
Wifi/ethernet server is set 'private'

I've deleted these and reset them in Windows Defender.

Tried turning off Windows Defender completely.

I also turned off 'protected browsing' in the xfinity service (usually this is only a problem when hosting I believe).

Deleted Fantasy Grounds classic and reinstalled. "Allowed app" via Windows Defender again.

No luck on any of this. Still receiving '400' error.

Any suggestions?

[damned]

Do you have access to a VPN service you can test it on?
Or try connecting to your mobile phones hotspot as a test?

[Achernar22]

I connected to hotspot but same result unfortunately....

http/1.1 400 Bad Request


Fantasy Grounds Updater v3.3.8 (if that matters)

[damned]

Unity and Classic have different update servers.
Often this can occur from something the ISP is doing but if you have tested with another link that likely eliminates that.
It seems that it is most likely local software on the computer.
Can you try whitelisting the 2 updater executables?

[Achernar22]

I've added the updater for 'classic' again under the exclusions. Same result. Looking in to how I can locate any other security apps on my computer.