How to Resolve Error Pipe Busy 231 (0xE7): 5 Effective Solutions

The Error_Pipe_Busy notification is a frequent issue encountered by developers, often accompanied by the message indicating that all pipe instances are busy (231 or 0xE7). If you find yourself facing this problem, this guide will provide you with the necessary steps to resolve it.

How can I resolve Error_Pipe_Busy?

1. Review Your Code

1. Access your codebase.
2. Verify that there are no mistakes in the target host paths.
3. Make sure the client does not attempt to connect more than once. Use DisconnectNamedPipe to terminate any existing connection before a new one is initiated.
4. Invoke ConnectNamedPipe() after CreateNamedPipe() or DisconnectNamedPipe(). Remember to perform this step prior to executing any I/O operations.

2. Utilize a Loop for WaitNamedPipe and CreateFile

1. Open your source code.
2. Ensure you employ WaitNamedPipe and CreateFile within a loop like this: repeathPipe: = CreateFile(...);if hPipe = INVALID_HANDLE_VALUE thenbeginif GetLastError() = ERROR_PIPE_BUSY thenbeginif not (attempted too many times) thenbeginif WaitNamedPipe(...) then Continue;end;end;end;Break;until False;
3. Save your modifications.

Alternatively, consider this code:

3. Modify NETLink Settings

1. Access and adjust your NETLink configuration to match the following: Needs["NETLink`"]InstallNET[];LoadNETType["System.IO.Pipes.PipeDirection"];
2. Ensure your PowerShell server is active.
3. Evaluate the code snippet below: NETBlock @ Internal`WithLocalSettings[ {pipe = NETNew["System.IO.Pipes.NamedPipeClientStream", ".", "testPipe", PipeDirection`In]} , pipe@Connect[] ; Internal`WithLocalSettings[ {stream = NETNew["System.IO.StreamReader", pipe]} , stream@ReadLine[] , stream@Dispose[] ], pipe@Dispose[] ] (* "Server pid is 12345"*)
4. Save your changes.

4. Review Telerik Configuration

1. Access your code.
2. Confirm that there is only a single instance of [SetUp], [TearDown], [TestFixtureTearDown].
3. Make any necessary adjustments and save your modifications.

5. Podman Usage Tips

1. If utilizing a VPN, it is essential to start the Podman machine prior to connecting to the VPN.
2. Execute these commands to restart WSL: podman machine stopwsl –shutdown
3. If issues persist, delete the. wslconfig file located in %USERPROFILE%/.wslconfig.

As previously mentioned, Error_Pipe_Busy is a common issue for developers and requires appropriate code adjustments to mitigate it.

Keep in mind that this error is not the only one you may encounter. We also covered ERROR_BROKEN_PIPE in a different guide.

Additionally, for more information on pipe-related issues, be sure to check our previous discussions on The pipe is being closed and The pipe has ended.

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