Blank Unity Editor, Assertion failed : Assertion failed on expression : 'SUCCEEDED(hr)'

So, I want at the start of Unity Editor, the editor becomes white blank like this pic below

Any help and suggestion for this issue? I have reinstall Unity and the same issue still exist.
Thanks

 

same for me

 

same

 

OK so I had been struggling with the same problem for days and I found out that I just need to update my drivers. https://support.microsoft.com/en-us/help/4028443/windows-update-drivers-in-windows-10 Once I updated my driver it fixed everything.

 

i had the same problem i checked the drivers following Thomasthom suggestion and they where all up to date but i noticed i had 2 display adaptors an intel HD graphics one and an nvidia one so i concluded that unity was using the intel one that didnt suport DX11 so i disabled the intel so it would definitively use the nvidia
the screen flickered and changed settings winch i changed back then opened unity and voila it worked
i guess unity doesn't play well with laptops that use intel HD graphics to save power
note tat doing this will negatively impact battery so reactivate intel HD graphics after you use unity

 

update
not satisfied with the above solution because it also stopped dual monitor from working
so i tried this
https://us.answers.acer.com/app/ans...49.558452771.1530544142-1132505082.1530544142
but to no awail

then i with the intel HD graphics disabled i opened unity then folowing
https://docs.unity3d.com/Manual/UsingDX11GL3Features.html
unpick auto API for windows then click + sign select openGLcore
click and drag openGLcore above direct3d11
acept
re enable intel HD graphics
unity still works dual monitor works
nvidia gpu activity says unity is running on the gpu
but I have my doubts

 

I had the white screen problem as well. Disabling the Intel card seemed to solve this, but the Unity Editor got extremely sluggish in larger projects. Windows 10 did not have an update for the Intel graphics driver, but the Intel Download Center did, at least for me: https://downloadcenter.intel.com/product/88345/Intel-HD-Graphics-530
After installing this, things seem to work fine again. Not white screens and the sluggishness is gone.

 

For me it didnt worked

 

I already seted my nvidia to receive the unity,
the unity is executing in nvidia but still giving the same error

 

my nvidia is an 1050Ti

 

I have Nvidia 1050Ti too. Did you solve the error?
When I set to use Intel Integrated unity works, but in nvidia I get the error. (White spaces)

 

so my current solution to this is
menu: Edit > Project Settings > Player
on the inspector go oher setings
unpick auto API for windows then click + sign select direct3d12
drag it above direct3d11
apply

 

I've been searching for a solution forever and this finally worked for me!

Thank you!!! ​

 

Thanks a lot!

 

so my current solution to this is
menu: Edit > Project Settings > Player
on the inspector go oher setings
unpick auto API for windows then click + sign select direct3d12
drag it above direct3d11
apply

It doesn't work for me. I don't have direct3d12 in menu. only direct3d11

 

Did it and now my project won't load because Unity CRASHES.

 

My solution is nearly the same, but instead of selecting direct3d12 I selected Vulkan. For me, it also worked to use OpenGL ES2.

My graphics card: GeForce GTX 1050Ti (Notebook)

Edit: I can now start Unity with standard configuration. My fix for this was to update my Intel graphics driver (Even though I start Unity with my Nvidia).

 

My solution was -> blocking the standard intel card in the laptop in order for the unity to be handled by my 1050. it worked like a charm. then do not forget to re-enable the "standard" card.

 

I've done the following with some extra and it worked for me.
At first I disabling the IntelHD card solved the issue but then I was not able to use workspace with a double screen somehow. So what I did:

1. disable the Intel HD card in the device manager
2. unplug my secondary monitor
3. launch Unity
4. enable again the Intel HD card
5. and then replug my secondary monitor
6. and then "voilà !"

 

ok this is how I fixed it:
1.Go to device manager
2.expand a tab called "display adapters"
3.right click on one of the display adapters and disable it
4. restart unity and see if it works
5.if it doesn't work go back to device manager and enable the display adapter that you disabled
6.disable the display adapter that you did not disable last time (disable the opposite display adapter)
7.restart unity and see if it works

p.s. for me disabling the radeon display adapter worked (not the intel integrated graphics)

 

I was having this issue (and it did work for me if I disabled one of my devices but that wasn't an acceptable solution for me) What I had to do was manually update the drivers on my Acer my intel driver was from 2017. Check the latest date on your device manager > display adapters. I had to manually download the latest driver from intel and update from the file. I also updated the NVIDIA driver I had but I don't think that was required.
------ from the log
Assertion failed on expression: 'SUCCEEDED(hr)'
(Filename: C:\buildslave\unity\build\Runtime/GfxDevice/d3d11/D3D11Window.cpp Line: 186)

 

Hello, I had the same problem. I correct it by following this video

Hello, I had the same problem. I correct it by following this video. 1st go to graphics settings. 2nd go to browse to find the unity folder where you install it. Then Editor: and select the application: Unity.exe, add 3rd click on the unity application in graphics settings go to options and select power saving.

Hello, I had the same problem. I correct it by following this video. 1st go to graphics settings. 2nd go to browse to find the unity folder where you install it. Then Editor: and select the application: Unity.exe, add 3rd click on the unity application in graphics settings go to options and select power saving.

 

I know how to fix it first go to file>open recent scene>which scene you have to go in and done!

 

thanks this works for me

 

I've encountered this problem as well.
My secondary monitor was plugged into directly the motherboard. Pluging it into my videocard instead solved the issue.

 

still happening in Unity 2021.3.9f1 but in Unity 2020.3.41f1 is working perfectly

 

this is happening to me now and nothing is working 2022.1.23f1

 

This morning Unity LTS 2021.3.19f1 struggled to open after several attempts. Finally, my game opened, but when I pressed play, there was this console error message triggering one per frame approx:

Assertion failed on expression: 'SUCCEEDED(hr)'
​

I just restarted Unity one more time, and now it is gone.
Now it triggers again; I debug up to a line of code.


DESCRIPTION
It triggers When

• I change the camera Field of View
• using C# variable: cameraFOVDamp

• sceneCamera.fieldOfView = cameraFOVDamp;  //   <---------------<<<

SOFTWARE
Unity LTS 2021.3.19f1
HDRP

HARDWARE
NVIDIA RTX 3090
2 monitors 4K TV55'

You were using

.fieldOfView

inside the code?

 

cant remember, I'll have to go back and check if this is still happening

 

Worked for me thanks.

 

same