Muse LSL Bridge Randomly Disconnects and Stops

[SagHack]

Hello, I've been using the Muse 2 (model Muse-CC86), but I'm experiencing an issue where the LSL Bridge randomly stops. The disconnection can happen anywhere between 1 minute - 30 minutes or more. I checked the logs, and it throws an exception. Here are the logs in case they are useful (in this case it lasted almost 30 minutes without error):

2025-02-06 09:31:38.473 [Information] BlueMuse started.
2025-02-06 09:50:29.584 [Information] BlueMuse started.
2025-02-06 10:03:12.864 [Information] BlueMuse started.
2025-02-06 10:31:32.332 [Error] Exception during toggle stream (start=False). Exception message: A method was called at an unexpected time. (Exception from HRESULT: 0x8000000E).
System.InvalidOperationException: A method was called at an unexpected time. (Exception from HRESULT: 0x8000000E)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x21
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0x70
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task) + 0x38
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task) + 0x17
at BlueMuse.MuseManagement.Muse.d__102.MoveNext() + 0xd6
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x21
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0x70
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task) + 0x38
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task) + 0x17
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() + 0xf
at BlueMuse.MuseManagement.Muse.d__95.MoveNext() + 0x140

2025-02-06 10:56:24.556 [Information] BlueMuse started.
2025-02-06 10:56:34.932 [Error] Exception during handling EEG Blueooth channel values.
System.ArgumentException: An item with the same key has already been added. Key: 273e0004-4c4d-454d-96be-f03bac821358
at System.ThrowHelper.ThrowAddingDuplicateWithKeyArgumentException(Object) + 0x11
at System.Collections.Generic.Dictionary`2.TryInsert(TKey, TValue, InsertionBehavior) + 0x267
at BlueMuse.MuseManagement.Muse.<EEGChannel_ValueChanged>d__117.MoveNext() + 0x797

2025-02-06 10:56:35.830 [Error] Exception during handling EEG Blueooth channel values.
System.ArgumentException: An item with the same key has already been added. Key: 273e0003-4c4d-454d-96be-f03bac821358
at System.ThrowHelper.ThrowAddingDuplicateWithKeyArgumentException(Object) + 0x11
at System.Collections.Generic.Dictionary`2.TryInsert(TKey, TValue, InsertionBehavior) + 0x267
at BlueMuse.MuseManagement.Muse.<EEGChannel_ValueChanged>d__117.MoveNext() + 0x797

2025-02-06 10:56:38.936 [Error] Exception during handling EEG Blueooth channel values.
System.ArgumentException: An item with the same key has already been added. Key: 273e0006-4c4d-454d-96be-f03bac821358
at System.ThrowHelper.ThrowAddingDuplicateWithKeyArgumentException(Object) + 0x11
at System.Collections.Generic.Dictionary`2.TryInsert(TKey, TValue, InsertionBehavior) + 0x267
at BlueMuse.MuseManagement.Muse.<EEGChannel_ValueChanged>d__117.MoveNext() + 0x797

2025-02-06 10:56:39.190 [Error] Exception during handling EEG Blueooth channel values.
System.ArgumentException: An item with the same key has already been added. Key: 273e0006-4c4d-454d-96be-f03bac821358
at System.ThrowHelper.ThrowAddingDuplicateWithKeyArgumentException(Object) + 0x11
at System.Collections.Generic.Dictionary`2.TryInsert(TKey, TValue, InsertionBehavior) + 0x267
at BlueMuse.MuseManagement.Muse.<EEGChannel_ValueChanged>d__117.MoveNext() + 0x797

2025-02-06 10:56:39.506 [Error] Exception during handling EEG Blueooth channel values.
System.ArgumentException: An item with the same key has already been added. Key: 273e0007-4c4d-454d-96be-f03bac821358
at System.ThrowHelper.ThrowAddingDuplicateWithKeyArgumentException(Object) + 0x11
at System.Collections.Generic.Dictionary`2.TryInsert(TKey, TValue, InsertionBehavior) + 0x267
at BlueMuse.MuseManagement.Muse.<EEGChannel_ValueChanged>d__117.MoveNext() + 0x797

2025-02-06 10:56:40.405 [Error] Exception during handling EEG Blueooth channel values.
System.ArgumentException: An item with the same key has already been added. Key: 273e0007-4c4d-454d-96be-f03bac821358
at System.ThrowHelper.ThrowAddingDuplicateWithKeyArgumentException(Object) + 0x11
at System.Collections.Generic.Dictionary`2.TryInsert(TKey, TValue, InsertionBehavior) + 0x267
at BlueMuse.MuseManagement.Muse.<EEGChannel_ValueChanged>d__117.MoveNext() + 0x797

2025-02-06 10:56:46.435 [Error] Exception during handling EEG Blueooth channel values.
System.ArgumentException: An item with the same key has already been added. Key: 273e0006-4c4d-454d-96be-f03bac821358
at System.ThrowHelper.ThrowAddingDuplicateWithKeyArgumentException(Object) + 0x11
at System.Collections.Generic.Dictionary`2.TryInsert(TKey, TValue, InsertionBehavior) + 0x267
at BlueMuse.MuseManagement.Muse.<EEGChannel_ValueChanged>d__117.MoveNext() + 0x797

2025-02-06 10:56:51.056 [Error] Exception during handling EEG Blueooth channel values.
System.ArgumentException: An item with the same key has already been added. Key: 273e0003-4c4d-454d-96be-f03bac821358
at System.ThrowHelper.ThrowAddingDuplicateWithKeyArgumentException(Object) + 0x11
at System.Collections.Generic.Dictionary`2.TryInsert(TKey, TValue, InsertionBehavior) + 0x267
at BlueMuse.MuseManagement.Muse.<EEGChannel_ValueChanged>d__117.MoveNext() + 0x797

2025-02-06 10:58:37.017 [Error] Exception during toggle stream (start=False). Exception message: A method was called at an unexpected time. (Exception from HRESULT: 0x8000000E).
System.InvalidOperationException: A method was called at an unexpected time. (Exception from HRESULT: 0x8000000E)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x21
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0x70
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task) + 0x38
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task) + 0x17
at BlueMuse.MuseManagement.Muse.d__102.MoveNext() + 0xd6
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x21
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0x70
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task) + 0x38
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task) + 0x17
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() + 0xf
at BlueMuse.MuseManagement.Muse.d__95.MoveNext() + 0x140

2025-02-06 10:58:37.028 [Error] Exception during toggle stream (start=False). Exception message: A method was called at an unexpected time. (Exception from HRESULT: 0x8000000E).
System.InvalidOperationException: A method was called at an unexpected time. (Exception from HRESULT: 0x8000000E)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x21
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0x70
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task) + 0x38
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task) + 0x17
at BlueMuse.MuseManagement.Muse.d__102.MoveNext() + 0xd6
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x21
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0x70
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task) + 0x38
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task) + 0x17
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() + 0xf
at BlueMuse.MuseManagement.Muse.d__95.MoveNext() + 0x140

2025-02-06 10:59:26.110 [Error] Exception during handling EEG Blueooth channel values.
System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
at System.ThrowHelper.ThrowInvalidOperationException_InvalidOperation_EnumFailedVersion() + 0x2d
at System.Collections.Generic.Dictionary2.Enumerator.MoveNext() + 0x1f at System.Collections.Generic.Dictionary2.Enumerator.MoveNext() + 0x34
at System.Linq.Enumerable.WhereEnumerableIterator1.MoveNext() + 0x6e at System.Collections.Generic.EnumerableHelpers.ToArray[T](IEnumerable1, Int32&) + 0xe8
at BlueMuse!+0x75e488
at BlueMuse.MuseManagement.Muse.<EEGChannel_ValueChanged>d__117.MoveNext() + 0x653

2025-02-06 11:01:17.537 [Error] Exception during handling EEG Blueooth channel values.
System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
at System.ThrowHelper.ThrowInvalidOperationException_InvalidOperation_EnumFailedVersion() + 0x2d
at System.Collections.Generic.Dictionary2.Enumerator.MoveNext() + 0x1f at System.Collections.Generic.Dictionary2.Enumerator.MoveNext() + 0x34
at System.Linq.Enumerable.WhereEnumerableIterator1.MoveNext() + 0x6e at System.Collections.Generic.EnumerableHelpers.ToArray[T](IEnumerable1, Int32&) + 0xe8
at BlueMuse!+0x75e488
at BlueMuse.MuseManagement.Muse.<EEGChannel_ValueChanged>d__117.MoveNext() + 0x653

2025-02-06 11:05:58.906 [Error] Exception during toggle stream (start=False). Exception message: A method was called at an unexpected time. (Exception from HRESULT: 0x8000000E).
System.InvalidOperationException: A method was called at an unexpected time. (Exception from HRESULT: 0x8000000E)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x21
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0x70
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task) + 0x38
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task) + 0x17
at BlueMuse.MuseManagement.Muse.d__102.MoveNext() + 0xd6
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() + 0x21
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task) + 0x70
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task) + 0x38
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task) + 0x17
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() + 0xf
at BlueMuse.MuseManagement.Muse.d__95.MoveNext() + 0x140

[dschlesinger]

Having same issue

[SamuelMiller]

Have you tried any of the following?

Make sure your headset has the latest firmware which can be installed through the Android or iOS Muse app in the settings
What are common BlueMuse LSL connection errors and fixes

Search results:

Common BlueMuse LSL Connection Errors & Fixes

BlueMuse issues stem mostly from Windows Bluetooth quirks, firewalls, or Muse pairing conflicts. Here's the top ones from GitHub issues/logs:

1. "Muse Not Detected" (Most Common)

• Cause: Muse paired in Windows Bluetooth settings; weak antenna.
• Fix:
  • Unpair Muse: Windows Settings > Bluetooth > Remove Muse.[1][2]
  • Reset Muse: Hold power 20s (off/on).[3]
  • Close phone apps (Muse Direct); disable nearby BT.[4]
  • Use USB BT dongle if laptop antenna weak.[1]

2. "Connects but Crashes/Disconnects (5-20s)"

• Cause: Firewall blocks LSL Bridge; AV interference; Muse 2 quirks.
• Fix:
  • Allow LSLBridge.exe through firewall: Control Panel > Firewall > Allow App > Browse to C:\Program Files\WindowsApps\...\LSLBridge.exe (Private/Public).[2]
  • Exclude BlueMuse from AV (Bitdefender/Windows Defender).[2]
  • Check logs (%LocalAppData%\Packages\BlueMuse...\LocalState\BlueMuse.log).[1]

3. "Stream Starts then Stops/No LSL Data"

• Cause: Timestamp mismatch; network/firewall.
• Fix:
  • Set BlueMuse timestamp to "LSL native" (Settings).[5]
  • Firewall: Allow UDP 16500-16600 (LSL ports).[6]
  • Restart LSL LabRecorder first, then BlueMuse.[1]

4. "Greyed Out Stream Button/Model Unknown"

• Cause: Firmware/BT driver.
• Fix: Update BT drivers; toggle "Always Pair" (risky); try Muse Direct first to confirm BT.[4]

Pro Tip: Run as Admin; test on fresh Win11 VM if persistent. 90% fix via unpair+firewall. Success? Connect BioExplorer via LSL scan post-stream start.[1][2]