Unreal crashes on startup?

Hello, I have a very important project, since I have been working on it these months, and today I tried to open it but UE4 crashes completely and it does not allow me to open my project or any other project, even try to create a new project but also give it a crash. I also tried to check the UE4 installation files but I can’t find a way to do it, can anyone help me? i have some captures. UE4 v4.24.1

The Error dialog is:

LoginId:d2ded3f9459ad7a859ae61a36a356e4f
EpicAccountId:0f5ba13ec6bd46138b03fa9699781035

Assertion failed: IsValid() [File:D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Templates/SharedPointer.h] [Line: 799]

UE4Editor_Core
UE4Editor_Core
UE4Editor_MainFrame
UE4Editor_UnrealEd
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

Thank’s for reading.

The first thing you’ll want to do to provide more information is to install the extra editor debug symbols. This will turn the UE4Editor_Core and other lines in the stack trace above into actual code line references that someone can look at.

You can install the editor debug symbols via the launcher. I believe you click the down arrow next to the launch button for your engine, go to options and select editor debugger symbols.

Then reproduce the crash and attach another screenshot or error dialogue.

Right, i installed it and now this is the new dialogue box:

LoginId:d2ded3f9459ad7a859ae61a36a356e4f
EpicAccountId:0f5ba13ec6bd46138b03fa9699781035

Assertion failed: IsValid() [File:D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Templates/SharedPointer.h] [Line: 799]

UE4Editor_Core!AssertFailedImplV() [d:\build++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:105]
UE4Editor_Core!FDebug::CheckVerifyFailedImpl() [d:\build++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:455]
UE4Editor_MainFrame!FMainFrameModule::CreateDefaultMainFrame() [d:\build++ue4\sync\engine\source\editor\mainframe\private\mainframemodule.cpp:212]
UE4Editor_UnrealEd!EditorInit() [d:\build++ue4\sync\engine\source\editor\unrealed\private\unrealedglobals.cpp:144]
UE4Editor!GuardedMain() [d:\build++ue4\sync\engine\source\runtime\launch\private\launch.cpp:154]
UE4Editor!GuardedMainWrapper() [d:\build++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:263]
UE4Editor!__scrt_common_main_seh() [d:\agent_work\2\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll

Are you building the engine from source, or using the binary version from the Epic Games Launcher?

If building from source, we can continue to troubleshoot what went wrong with your engine source code. But if you’re using the binary (prebuilt) version, as is much more common, then perhaps your engine files became corrupt somehow?

A couple things I would suggest trying, if you’re able to:

  1. Try opening your project from another computer; this will tell you if the problem is your project, or if the problem is your engine/computer (my guess is the latter).
  2. If you’re using a binary (prebuilt) version of the engine, try repairing it or completely reinstalling it on the machine you’re having the problem on.

I am using the version of epic games, the normal version, I already tried to uninstall version 4.24.1 and install the 4.24.2 and the problem remains the same, it seems that it was my computer’s problem, but my computer worked perfectly 3 days ago, I don’t know why this happens to me. (I don’t have another computer to test).

Try installing the vs2019 c++ runtimes Latest supported Visual C++ Redistributable downloads | Microsoft Docs

I just installed it and it didn’t work. :frowning:

Try to uninstall and install the unreal again, you may be missing a file.

I already did it, I even updated to a newer version