Windows Operations
PowerShell Module Not Found Debugging Guide
Resolve PowerShell module discovery and import failures across PSModulePath, editions, versions, dependencies and execution identities. This reference is written for developers who need practical validation behavior, reviewable rules and safe examples rather than copied snippets with no explanation.
Recommended workflow
| Step | Why it matters |
|---|---|
| Identify the host | Record PowerShell edition, version, architecture and the identity running the command. |
| Inspect discovery paths | Compare PSModulePath and installed locations in interactive, scheduled and service contexts. |
| Import verbosely | Use the fully qualified module name to expose version and dependency errors. |
| Validate compatibility | Check required editions, native binaries and dependent module constraints. |
Starter snippet
Get-Module -ListAvailable; $env:PSModulePath -split [IO.Path]::PathSeparatorReview checks
- Install modules for the intended scope.
- Pin automation dependencies explicitly.
- Avoid mixing Windows PowerShell and PowerShell paths blindly.
- Test under the production identity.
Common mistakes
- Copying modules into random PATH directories.
- Installing as admin while the job uses another profile.
- Assuming Import-Module errors always mean the module is absent.
Validation should help users correct input while protecting systems from bad data. Keep syntax checks, product policy, security review and deliverability checks separate.
Related Formalint references
Continue with PowerShell Execution Policy Debugging, Windows Admin Command Guide, Dependency Vulnerability Triage Guide.