Win10 x64，120G SSD drive
This error frequently occurred when I tried to run the program.
I got similar errors when staring Citavi and I cannot see the welcome screen after errors occur. I tried the method Sebastian provided, but it still did not work. This kind of starting errors only exist when connecting internet. If I close internet, I can easily open Citavi and local projects. So I guess there might be some connecting problem with Citavi.
I also tried the beta version 6.0.4. Things get a little bit better. But this kind of staring errors still occurs frequently.
You're right about this error!
It takes a long time to see the welcome screen if I creat an inbound and an outbound rule for citavi.exe in the firewall. Also the crash occurs. But it works well without internet connection. So I recommend you that Citavi should verify its license during working time, not at the very beginning. I hope this problem should be fixed in the next version.
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