Forum Discussion

KappaFlow's avatar
KappaFlow
Copper Contributor
Mar 09, 2025
Solved

Web Speech API stopped working on Edge starting with v.134

Starting with version 134 of the Edge Browser (Windows 10, Edge Stable Version 134.0.3124.51, released March 6, 2025), the functionality of speech recognition (WebSpeechAPI) has been broken. This iss...
edge
Speech Recognition
Kelly_Y's avatar
Kelly_Y
Icon for Microsoft rankMicrosoft
May 19, 2026

Hi Everyone!  I just left a similar reply in the other thread but just to make sure I reach everyone, replying here as well.  Our developers are investigating and need some additional information.  If you are able, can you provide the following? 

 

  1. Navigate to edge://metrics-internals/#variations and provide the values for SpeechNetworkStack and CFRSpeechServiceProtectECS experiments.  It is possible you will not have these but if you do, it will look something like this:
    "SpeechNetworkStack": {
            "enableFeatures": [
                "msSpeechRecognitionChromiumNetworkStack"
            ]
        },
        "CFRSpeechServiceProtectECS": {
            "enableFeatures": [
                "msSpeechSynthesisServiceUseCetoService",
                "msSpeechRecognitionServiceUseCetoService"
            ]
        },
  2. After you see the failure, navigate toedge://histograms and provide the information under the following sections (they will all be right next to each other)


"Microsoft.SpeechRecognition.CancellationReason"
"Microsoft.SpeechRecognition.Error"
"Microsoft.SpeechRecognition.ErrorRate"
"Microsoft.SpeechRecognition.Event"
"Microsoft.SpeechRecognition.Method2"
"Microsoft.SpeechRecognition.SdkInstall"
"Microsoft.SpeechRecognition.WasRateLimited"

 

If you prefer, please feel free to send me a message with this information.  Thanks! 

-Kelly

tom_contrast's avatar
tom_contrast
Copper Contributor
May 21, 2026

Using edge version 148.0.3967.70 (Official build) (arm64) on a M4 Mac Sequoia 15.5 (24F74),

 

To get the following metrics we used this page:

https://mdn.github.io/dom-examples/web-speech-api/speech-color-changer/

 

Metrics internals:

None

 

Histogram:

Nothing


- Histogram: Microsoft.EdgeNetworkSpeechRecognition.ControllerEvent recorded 39 samples, mean = 8.0 (flags = 0x41) [#]

0 ...

8 ---------------------------------------O (39 = 100.0%) {0.0%}

9 ...

- Histogram: Microsoft.EdgeNetworkSpeechRecognition.EngineEvent recorded 26 samples, mean = 2.5 (flags = 0x41) [#]

0 -------------O (13 = 50.0%)

1 ...

5 -------------O (13 = 50.0%) {50.0%}

6 ...






- Histogram: Microsoft.SpeechRecognition.Event recorded 26 samples, mean = 0.5 (flags = 0x41) [#]

0 -------------O (13 = 50.0%)

1 -------------O (13 = 50.0%) {50.0%}

2 ...

- Histogram: Microsoft.SpeechRecognition.Method2 recorded 26 samples, mean = 1.5 (flags = 0x41) [#]
0 -------------O (13 = 50.0%)

1 ...

3 -------------O (13 = 50.0%) {50.0%}

4 O (0 = 0.0%) {100.0%}

- Histogram: Microsoft.SpeechRecognition.SavedAudioLength recorded 13 samples, mean = 0.0 (flags = 0x41) [#]

0 -------------O (13 = 100.0%)

1 ...

- Histogram: Microsoft.SpeechRecognition.WasRateLimited recorded 13 samples, mean = 0.0 (flags = 0x41) [#]

0 -------------O (13 = 100.0%)

1 ...

 

- Histogram: OptimizationGuide.ModelExecution.OnDeviceAdaptationModelAvailability.OnDeviceSpeechRecognition recorded 2 samples, mean = 1.0 (flags = 0x41) [#]

0 O (0 = 0.0%)

1 --O (2 = 100.0%) {0.0%}

2 ...