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System.IO.IOException on MacOS pwsh #5225
Description
Prerequisites
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- Make sure you are able to repro it on the latest released version
- Search the existing issues, especially the pinned issues.
Exception report
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Please report this bug with ALL the details below, including both the 'Environment' and 'Exception' sections.
Please report on GitHub: https://github.com/PowerShell/PSReadLine/issues/new?template=Bug_Report.yaml
Thank you!
### Environment
PSReadLine: 2.4.5
PowerShell: 7.6.8
OS: macOS 26.7.1
BufferWidth: 80
BufferHeight: 24
Last 0 Keys:
### Exception
System.IO.IOException: The system cannot open the device or file specified. : 'PSReadLineHistoryFile_3549844812'. One or more system calls failed: lstat("", ...) == -1; errno == ENOENT;
at System.Threading.Mutex.CreateMutexCore(Boolean initiallyOwned, String name, NamedWaitHandleOptionsInternal options, Boolean& createdNew)
at System.Threading.Mutex..ctor(Boolean initiallyOwned, String name)
at Microsoft.PowerShell.PSConsoleReadLine.DelayedOneTimeInitialize()
at Microsoft.PowerShell.PSConsoleReadLine.Initialize(Runspace runspace, EngineIntrinsics engineIntrinsics)
at Microsoft.PowerShell.PSConsoleReadLine.ReadLine(Runspace runspace, EngineIntrinsics engineIntrinsics, CancellationToken cancellationToken, Nullable`1 lastRunStatus)Screenshot
Environment data
PS Version: 7.6.8
PS HostName: ConsoleHost
PSReadLine Version:
PSReadLine EditMode: Emacs
OS: Darwin dm-XXXXX 25.6.0 Darwin Kernel Version 25.6.0: Tue Aug 18 17:49:53 PDT 2026; root:xnu-12377.161.15.700.19~2/RELEASE_ARM64_T6030 arm64
BufferWidth: 114
BufferHeight: 59Steps to reproduce
run "sudo pwsh" in the terminal
Expected behavior
No exception
Actual behavior
Exception, PSReadLine does not work, has to be removed with "Remove-Module PSReadLine" to be able to use pwsh
Activity
michael-yi-wang commentedon Oct 26, 2026
I am having the same issue.