A required certificate is not within its validty period when verifying against the current system clock or timestamp in the signed file.

Keep getting this error after trying to producing a normal model, once this has happened you have fully left the program as you cant open a new file or old file.

have also now tired to use offline and it still causing the same issue

 

Here are 4 possible fixes how some of users fixed the problem (the same workaround doesn´t work for everybody)

FIX 1

I managed to sort the problem myself. Although I had deinstalled an older version of RC it seems like my PC still kept some old stuff and just installed the new version into that folder. Those files from previous versions seemed to mess the timestamp up.

I, therefore, deleted everything I could find from epic games and older RC-versions and re-installed it a third time and I’m good to go.

 

FIX 2

I have removed the device from the Domain Controller and uninstall it and remove it from the registry, after new installation and offline registration I couldn’t save the project also. I removed the software and did an online activation seems it worked.

I think the time was a problem because it was managed by the organization and I was different from the official time in 1 sec approx.

FIX 3

Make it like a clean install and Offline activation

FIX 4

RCNode.exe I think was blocked by system firewall. I just go to RC install folder and start RCNode - windows show firewall notification and I accept it for all networks. Additionally I start RC as admin and in general settings I do license change -> application owner I resign in, also charge for offline use I sign in again…