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Skills fail to load on Windows due to Expand-Archive using PowerShell 5.1 instead of configured pwsh shell #29957
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Description
Description
Even with "shell": "pwsh" configured, skill loading uses Windows PowerShell 5.1's Expand-Archive, which fails with CouldNotAutoloadMatchingModule. Skill files already exist on disk at ~/.opencode/skills/kotlin/ so the ZIP extraction step should be skipped or should respect the shell config.
power shell 7.6.2 is installed.
`→ Skill "kotlin"
Expand-Archive : The 'Expand-Archive' command was found in the module 'Microsoft.PowerShell.Archive', but the module could not be loaded. For more information, run 'Import-Module Microsoft.PowerShell.Archive'.
At line:1 char:50
- ... lobal:ProgressPreference = 'SilentlyContinue'; Expand-Archive -Litera ...
-
~~~~~~~~~~~~~~- CategoryInfo : ObjectNotFound: (Expand-Archive:String) [], CommandNotFoundException
- FullyQualifiedErrorId : CouldNotAutoloadMatchingModule`
Plugins
No response
OpenCode version
1.15.12
Steps to reproduce
unzip below file to ~/.opencode/skills
kotlin.zip
Screenshot and/or share link
No response
Operating System
windows 11
Terminal
powershell 7.6.2
Reacted by weeix
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github-actions commentedon May 30, 2026
This issue might be a duplicate of existing issues. Please check:
Expand-Archivemodule auto-load failure when spawned from opencode.exe (Bun) on Windows, with identical error messageExpand-Archiveerror on Windows PowerShell when loading skillsIf your issue is distinct (e.g. the skills ZIP already exists and extraction should be skipped entirely), please clarify that in your report.
turkeryildirim commentedon May 30, 2026
additional test: blank project with simple readme.md file. i gave one simple prompt : "read the readme file" no extra skills/agents are registered.
error:
✱ Glob "README*"
Expand-Archive : The 'Expand-Archive' command was found in the module 'Microsoft.PowerShell.Archive', but the module co
uld not be loaded. For more information, run 'Import-Module Microsoft.PowerShell.Archive'.
At line:1 char:50
github-actions commentedon Jul 30, 2026
To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.