EVR not working on Windows 10 LTSC 1809

Question

I have 2 PCs, both are having Windows 10 Enterprise LTSC (Version 1809, Build 17763.4377) installed.

PC1 configs:

• CPU: Intel® Core™ i3-8100 CPU @ 3.60 GHz
• Graphics: Intel® UHD Graphics 630 (driver 26.20.100.7158)

PC2 configs:

• CPU: 12th Gen Intel® Core™ i5-12500T
• Graphics: Intel® UHD Graphics 770 (driver 31.0.101.3678)

Now issue is that EVR(Enhance Video Renderer) is working fine on PC1 but not on PC2.

I am using GraphStudio tool and inserting a file source filter and EVR filter. On PC1, when I try to render the file source it gets connected with EVR and works fine. But on PC2, EVR is unable to get connected in graph chain, even if I force it to connect manually.

As the OS and windows update are same on both PCs, so I am unable to figure out the root cause. I am suspecting that raw video format required for rendering is not supported by EVR on PC2. I also upgraded/downgraded the intel Graphics driver manually but issue still persist.

Any idea how to/where to check for this issue.

Thanks.

Answer 1

Hi，

Please use the System File Checker to scan Windows system files. Open cmd as administrator and run the commands below  

DISM.exe /Online /Cleanup-image /Restorehealth
sfc /scannow

This will scan all protected system files and replace corrupted files with a cached copy.

Also try manually registering the EVR dll file

regsvr32 evr.dll

Best Regards,

Ian Xue

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Answer 2

Hello!

If you're having trouble with EVR working on one PC but not the other, there are a few things we can try to troubleshoot the issue. Here's what I suggest:

First, let's check the graphics drivers on both PCs and make sure they're up to date. Even though they're both running Windows 10 Enterprise LTSC (Version 1809, Build 17763.4377), they may have different hardware components and drivers. Go to the manufacturer's website for each PC's graphics card and download and install the latest drivers.

Next, let's compare the installed software and codecs on both PCs. Make sure the same media player software is installed on both PCs and that the necessary codecs for EVR are present. Ensure that any third-party codecs or codec packs are up to date and compatible with EVR.

We should also verify the DirectX version on both PCs. Open the Run dialog (Windows key + R) and enter "dxdiag" to open the DirectX Diagnostic Tool. Check the DirectX version listed on both PCs and make sure they're the same. If not, consider updating DirectX to the latest version.

If none of those steps work, we can try resetting the Windows Media Player settings on PC2. Open Windows Media Player, go to "Organize" -> "Options" -> "Performance" tab, and click on "Restore Defaults." Restart the PC and check if EVR works.

It's also worth trying to play different media files on both PCs to see if the issue is specific to certain file types. If EVR doesn't work for any media file on PC2, it could indicate a broader compatibility or configuration issue.

Lastly, we should review the Group Policy settings on both PCs to ensure there are no specific policies or restrictions affecting EVR on PC2. Open the Group Policy Editor (gpedit.msc) and navigate to "Computer Configuration" -> "Administrative Templates" -> "Windows Components" -> "Windows Media Player" and check the settings.

If none of these steps work, let's gather more information such as error messages or specific behaviors to assist in further troubleshooting.

Hope this helps!