Cycles-X Branch - "MFPlat.DLL was not found" #90200

New Issue

TaylorS · 2021-07-26T20:04:47+02:00

TaylorS commented

2021-07-26 20:04:47 +02:00

System Information
Operating system: Windows 11 Pro N (I had the same issue on my windows 10 pro device)
Graphics card: NVIDIA GeForce RTX 2070 Super

Blender Version
Broken: Blender 3.0 - July 26, 05:07:26 - cycles-x - 14a3ceae0a47
Worked: (Not known exactly, but a recent patch a few days back was working)

Short description of error
Blender does not open, simply outputs an error message saying "The code execution cannot proceed because MFPlat.DLL was not found"

Exact steps for others to reproduce the error
Based on the default startup
(Download the most recent Cycles X branch and try to run it, specifically the version mentioned)

**System Information** Operating system: **Windows 11 Pro N** ***(I had the same issue on my windows 10 pro device)*** Graphics card: **NVIDIA GeForce RTX 2070 Super** **Blender Version** Broken: **Blender 3.0 - July 26, 05:07:26 - cycles-x - 14a3ceae0a47** Worked: **(Not known exactly, but a recent patch a few days back was working)** **Short description of error** Blender does not open, simply outputs an error message saying "**The code execution cannot proceed because MFPlat.DLL was not found**" ![Capture.PNG](https://archive.blender.org/developer/F10239038/Capture.PNG) **Exact steps for others to reproduce the error** Based on the default startup **(Download the most recent Cycles X branch and try to run it, specifically the version mentioned)**

TaylorS commented

2021-07-26 20:04:47 +02:00

Added subscriber: @MisterSirCode-4

Jesse Yurkovich commented

2021-07-26 20:20:29 +02:00

Added subscribers: @LazyDodo, @deadpin

Jesse Yurkovich commented

2021-07-26 20:20:29 +02:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Jesse Yurkovich commented

2021-07-26 20:20:29 +02:00

The "N" SKU of windows does not contain that binary (by design since the SKU is meant to not include various media-related items) unless you install the "Media feature pack"[1].

@LazyDodo Might you know where that dependency is being pulled in from/what might use it? It's difficult to say what might be triggering its load.

KB article KB3145500

The "N" SKU of windows does not contain that binary (by design since the SKU is meant to not include various media-related items) unless you install the "Media feature pack"[1]. @LazyDodo Might you know where that dependency is being pulled in from/what might use it? It's difficult to say what might be triggering its load. - [x] KB article [KB3145500 ](https://support.microsoft.com/en-us/help/3145500/media-feature-pack-list-for-windows-n-editions)

Ray molenkamp commented

2021-07-26 20:29:10 +02:00

ffmpeg is pulling it in ever since the version bump in 95690dd362 i'd have to look into if we can get rid of it and if we do what we would lose.

ffmpeg is pulling it in ever since the version bump in 95690dd362 i'd have to look into if we can get rid of it and if we do what we would lose.

Ray molenkamp commented

2021-07-26 20:30:33 +02:00

It's somewhat strange @MisterSirCode-4 reports this changed in the last few days, by my math this should have been failing since the end of may?

TaylorS commented

2021-07-26 20:34:42 +02:00

In #90200#1197328, @LazyDodo wrote:
It's somewhat strange @MisterSirCode-4 reports this changed in the last few days, by my math this should have been failing since the end of may?

Ive been using Cycles X branch for months, updating it about once each week.
Last weeks latest patch straight off the experimental branch page was working on Windows 10 and 11 on both of my devices.
Ive honestly got no clue.
Though, you say its related to FFmpeg, so would this possibly be fixed by reinstalling it?

the only thing that I can think of, is that I recently cleared some caches and old programs, ffmpeg may have been located within one of the old library folders, in which case I couldve deleted it (Though I'm skeptical I coincidentally deleted it on both devices... that'd be extremely unlucky)

Im not 100% sure where the default install directory is, so Ill sift through my PATH and see if I still have ffmpeg

Edit: ffmpeg sure as heck wasnt in my PATH, I reinstalled it, verified it was active in command prompt, and then restarted my PC. Tried re-running blender 3.0 and it still has the same error. Meanwhile 2.93 from steam works fine.

> In #90200#1197328, @LazyDodo wrote: > It's somewhat strange @MisterSirCode-4 reports this changed in the last few days, by my math this should have been failing since the end of may? Ive been using Cycles X branch for months, updating it about once each week. Last weeks latest patch straight off the experimental branch page was working on Windows 10 and 11 on both of my devices. Ive honestly got no clue. Though, you say its related to FFmpeg, so would this possibly be fixed by reinstalling it? the only thing that I can think of, is that I recently cleared some caches and old programs, ffmpeg may have been located within one of the old library folders, in which case I couldve deleted it (Though I'm skeptical I coincidentally deleted it on both devices... that'd be extremely unlucky) Im not 100% sure where the default install directory is, so Ill sift through my PATH and see if I still have ffmpeg **Edit: ffmpeg sure as heck wasnt in my PATH, I reinstalled it, verified it was active in command prompt, and then restarted my PC. Tried re-running blender 3.0 and it still has the same error. Meanwhile 2.93 from steam works fine.**

Jesse Yurkovich commented

2021-07-26 20:42:25 +02:00

No, blender includes ffmpeg itself. Perhaps you had the media pack installed before and removed it?

You can try an archived build of cycles-x from a few weeks ago to confirm: https://builder.blender.org/download/experimental/archive/ (pick a cycles-x build with a date that you think should work and try that?)

Beyond that, installed the Media pack should allow you to get back in business if you are blocked.

No, blender includes ffmpeg itself. Perhaps you had the media pack installed before and removed it? You can try an archived build of cycles-x from a few weeks ago to confirm: https://builder.blender.org/download/experimental/archive/ (pick a cycles-x build with a date that you think should work and try that?) Beyond that, installed the Media pack should allow you to get back in business if you are blocked.

TaylorS commented

2021-07-26 20:56:11 +02:00

In #90200#1197334, @deadpin wrote:
No, blender includes ffmpeg itself. Perhaps you had the media pack installed before and removed it?

You can try an archived build of cycles-x from a few weeks ago to confirm: https://builder.blender.org/download/experimental/archive/ (pick a cycles-x build with a date that you think should work and try that?)

Beyond that, installed the Media pack should allow you to get back in business if you are blocked.

I tried a few recent patches and they had the same error.

I guess its a local issue then.

I pasted a mfplat.dll into the main directory of the most recent patch and it works perfectly. (I tried installing the media pack but it only supports up to windows 10 as of right now, so I cant use the official one, but I found the dll relatively easily)

> In #90200#1197334, @deadpin wrote: > No, blender includes ffmpeg itself. Perhaps you had the media pack installed before and removed it? > > You can try an archived build of cycles-x from a few weeks ago to confirm: https://builder.blender.org/download/experimental/archive/ (pick a cycles-x build with a date that you think should work and try that?) > > Beyond that, installed the Media pack should allow you to get back in business if you are blocked. I tried a few recent patches and they had the same error. I guess its a local issue then. I pasted a mfplat.dll into the main directory of the most recent patch and it works perfectly. (I tried installing the media pack but it only supports up to windows 10 as of right now, so I cant use the official one, but I found the dll relatively easily)

Ray molenkamp self-assigned this 2021-07-26 21:37:13 +02:00

Ray molenkamp commented

2021-07-26 21:37:13 +02:00

took a quick peek, doesn't seem like we need that dependency, i should be able to rebuild ffmpeg without it, give it a few days, i'll post here when a new build is available you can test.

Ray molenkamp commented

2021-07-26 22:09:27 +02:00

actually that was less work than expected, can you remove the mfplat.dll you added, and replace the ffmpeg dlls with the ones in the zip file attached below.

ffmpeg_44_no_mediafoundation.zip

does that work for you?

actually that was less work than expected, can you remove the `mfplat.dll` you added, and replace the ffmpeg dlls with the ones in the zip file attached below. [ffmpeg_44_no_mediafoundation.zip](https://archive.blender.org/developer/F10239296/ffmpeg_44_no_mediafoundation.zip) does that work for you?

TaylorS commented

2021-07-27 04:16:11 +02:00

In #90200#1197398, @LazyDodo wrote:
actually that was less work than expected, can you remove the mfplat.dll you added, and replace the ffmpeg dlls with the ones in the zip file attached below.

ffmpeg_44_no_mediafoundation.zip

does that work for you?

thankyou, Ill try that out.

also it turns out Windows 11 can get the Media Feature Pack... its an optional feature.

Im still not sure why this is happening on my windows 10 device aswell, Ill try out that ffmpeg build with it and see what happens

Also, regarding the dependency to blender, can this be fixed within blender itself to not require MFPlat.dll? Or does it actually need it... I only ask because all my 2.93 and older builds are all still working on both devices.

its only cycles X branch that doesnt appear to work.

> In #90200#1197398, @LazyDodo wrote: > actually that was less work than expected, can you remove the `mfplat.dll` you added, and replace the ffmpeg dlls with the ones in the zip file attached below. > > [ffmpeg_44_no_mediafoundation.zip](https://archive.blender.org/developer/F10239296/ffmpeg_44_no_mediafoundation.zip) > > does that work for you? thankyou, Ill try that out. also it turns out Windows 11 *can* get the Media Feature Pack... its an optional feature. Im still not sure why this is happening on my windows 10 device aswell, Ill try out that ffmpeg build with it and see what happens **Also, regarding the dependency to blender, can this be fixed within blender itself to not require MFPlat.dll? Or does it actually need it... I only ask because all my 2.93 and older builds are all still working on both devices.** **its only cycles X branch that doesnt appear to work.** ![image.png](https://archive.blender.org/developer/F10239727/image.png)

Ray molenkamp commented

2021-07-27 06:02:37 +02:00

Also, regarding the dependency to blender, can this be fixed within blender itself to not require MFPlat.dll?

Yes, and i'm asking you to test it.

> Also, regarding the dependency to blender, can this be fixed within blender itself to not require MFPlat.dll? Yes, and i'm asking you to test it.

blender-admin commented

2021-07-29 18:21:43 +02:00

This issue was referenced by cae18abef4

This issue was referenced by cae18abef47d6aeacf54ccf8f05c5cece11afd91

Ray molenkamp commented

2021-07-29 18:23:04 +02:00

Changed status from 'Needs Developer To Reproduce' to: 'Resolved'

Ray molenkamp closed this issue

2021-07-29 18:23:04 +02:00

Ray molenkamp commented

2021-07-29 19:21:45 +02:00

should be fixed starting with the next daily builds.

TaylorS commented

2021-07-30 18:47:52 +02:00

Glad to hear it was fixed.

The push fixed it on my windows 10 device as well, and I also downloaded the update on my windows 11 pro n device, it is working without the DLL or media pack

Glad to hear it was fixed. The push fixed it on my windows 10 device as well, and I also downloaded the update on my windows 11 pro n device, it is working without the DLL or media pack

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Cycles-X Branch - "MFPlat.DLL was not found" #90200