Sorry but it won’t. The problem is still there. In fact, I don’t think there is something wrong with my project, because I can’t even start the empty(without opening a project) editor.
Thanks for help.
Do you currently have access to the launcher or is the the launcher not even opening? If you have access to the launcher, try removing the problem project from the Unreal Projects folder in your Documents temporarily and see if you can launch the current version of the editor. If not, select the current version of the editor in your library and from the drop down menu select, “Verify.” Let us know if this works or if you do not even have access to the Launcher.
I’m glad to hear restoring your system has apparently resolved the issue. If you continue to experience problems launching the editor, respond to this thread and we will continue to investigate -thanks!
The way it worked for me (Case was an Unreal Engine 4 Project and I wanted to open it in 5.1 ) was by deleting the (Binaries + Intermediate) Folders → Right Click on the project (.uproject) and generate Visual Studio Files → then I opened the project .sln file which is a Visual Studio file included in the main folder of the project → manual re-build from there and checking for errors (errors I encountered were mostly the #include directories which refers to the old engine version and the my old machine directory)
Note: I am not a developer but this how I fixed this error for the case I mentioned earlier.
Hope this helps