Error: At least 1 module failed remote validation

Summary

Out of nowhere, yesterday I started having problems with launching session. When I try to launch session , I get this error: At least 1 module failed remote validation

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Other

Steps to Reproduce

Open UEFN & press “Launch session”

Expected Result

Launching session without any problems

Observed Result

Can’t launch session, while getting error “Unable to Play: Atleast 1 module failed remote validation”

LogValkyrie: Error: FlowStep_ResolveSessionCandidates(): Candidate module [0a2d7626-42e0-58bf-7728-83b49a97d4ee] failed validation with error: [errors.com.epicgames.pre-processing.download_failure]

Platform(s)

PC

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Additional Notes

Does anyone has any tips how to fix this? I tried many things people said on forums, but nothing helped - verifing files, restarting UEFN many times, etc.