You must block the application from accessing the internet using the Windows Firewall. Open Windows Defender Firewall with Advanced Security . Select Outbound Rules and create a New Rule .
The most common issue with R19 on Windows 11 (and Windows 10 build 20H2 onwards) is a startup crash related to the application's internal update/communication check. cinema 4d r19 windows 11 upd
: Note that while R19 can open files from older versions like 11.5, newer versions (R20+) may require you to save your project in R19 first before they can open them. You must block the application from accessing the