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Blender Crashes on startup
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I downloaded 2.79 againg and it crashes anyway
Crash splash screen message:

Firma con problemas:

Nombre del evento de problema:	APPCRASH
Nombre de la aplicación:	blender.exe
Versión de la aplicación:
Marca de tiempo de la aplicación:	5ab3d313
Nombre del módulo con errores:	MSVCR120.dll
Versión del módulo con errores:	12.0.21005.1
Marca de tiempo del módulo con errores:	524f83ff
Código de excepción:	40000015
Desplazamiento de excepción:	0000000000074a46
Versión del sistema operativo:	6.1.7601.
Id. de configuración regional:	3082
Información adicional 1:	8f27
Información adicional 2:	8f273a46949532b247124c19dd9bfc51
Información adicional 3:	f30d
Información adicional 4:	f30dd7d8e252eb571a2ec910ae71df5a

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System Information
Operating system and graphics card
Windows 7
NVIDIA GeForce GTX 960

Blender Version
Broken: 2.79

Short description of error
Crashes on startup

Exact steps for others to reproduce the error
Just double-click on the Blender Icon!



Event Timeline

Philipp Oeser (lichtwerk) triaged this task as Needs Information from User priority.May 17 2018, 10:36 AM

There are 3 main causes so far for problems like this.

Windows not updated.
You really really really need windows to run all windows updates on windows vista or 7. For windows 7 you need SP1 installed and for Vista you need to be fully updated.
Please check this, it is the most common cause of this problem.

Python related
Having PYTHONPATH, PYTHONHOME or any python related environment variables causes blender to try and use an incompatible version of python.
Even the official windows 3.4 python is currently incompatible as that is compiled with Visual Studio 2010 and does not include a proper manifest. Loading that will crash 100% either silently of with a message like the one posted above.
Please make sure there are not PYTHON related environment variables set.

OpenGL related
Please test with a software opengl driver
Download this dll and copying it so its located in the same directory as 'blender.exe' and run Blender normally.

Marking as incomplete until these things are tested...

KLZ (KLZ) added a comment.EditedMay 18 2018, 5:58 AM

Python related. Having PYTHONPATH, PYTHONHOME or any python related environment variables causes blender to try and use an incompatible version of python.

Philipp, thanks! you are right, the second option is causing the issue. We are recently trying some development with Oculus Rift and some Python libraries have been installed on that pc.

Perhaps someone could develop a .bat file capable of storing environment variables, shut down them, execute blender, and recharge them at the end of the Blender session?

PD: task solved, please close it

Philipp Oeser (lichtwerk) closed this task as Resolved.May 18 2018, 9:40 AM
Philipp Oeser (lichtwerk) claimed this task.

Glad to hear!