Should be quite simple - don’t need to adjust anything in Fiddler/HCCE itself - but I will write a quick guide on the SDK for convenience:
- Download the SDK (Release) from the Github page.
- Copy the contents into HITMAN 3>Retail folder.
- Start Hitman
- Bring up the SDK menu using “`¦¬~” key (below Escape)
- Press Mods
- Tick which you want to activate, the important one here is Online Tools (I had CertPinBypass above using an out of date version, same thing though. If you have CertPinBypass version just tick that and skip to the last step)
- Press OK
- Reopen the SDK Menu
- Press Online Tools
- Tick “Bypass SSL Certificate Pinning”
- Close the SDK Menu.
That’s it (if it doesn’t take effect straight away, restart the game). You should now be able to create HCCE contracts as normal again.