UEFN Projects cannot be Opened, Created or Synced. / UEFN Projects stuck on 36%

General Issues and Bug Reporting
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For anyone still experiencing this issue who have already updated Windows Defender, but have not had success with the above resolutions, please try the following:

  • Close UEFN if it is open
  • navigate to C:\Users\[USERNAME]\AppData\Local\Temp\.net
  • delete the URC folder
  • reopen UEFN (the URC folder will be recreated from scratch) and try again to open the project
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