M365CertAuth
1.2.3
Certificate-based authentication module for Microsoft 365 PowerShell modules. Automates certificate creation, app registration, permission assignment, and provides ready-to-use certificates for all M365 services. Features tenant management with secure storage and selection menus. Requires Microsoft Graph PowerShell modules for Azure AD operations.
Minimum PowerShell version
5.1
Installation Options
Owners
Copyright
(c) 2025 PowerShell Community. All rights reserved.
Package Details
Author(s)
- PowerShell Community
Tags
Microsoft365 Azure Certificate Authentication Exchange SharePoint Graph PowerShell TenantManagement MultiTenant
Functions
Get-CertificateForAuth Show-CertificateAuthHelp Get-StoredTenants Show-StoredTenants Remove-StoredTenant Clear-StoredTenants
Dependencies
This module has no dependencies.
Release Notes
Version 1.2.3
- Removed fallback encryption methods for cleaner, more secure implementation
- Simplified encryption logic with proper assembly loading
- Enhanced help examples to use module-provided values (no more hardcoded placeholders)
- Improved connection examples with actual tenant properties
Version 1.2.2
- Fixed compatibility issue with System.Security.Cryptography.ProtectedData
- Added proper assembly loading for encryption support
- Updated help examples to use actual module-provided values instead of placeholders
- Enhanced connection examples with real tenant information
Version 1.2.1
- Enhanced help documentation with detailed tenant management workflow
- Improved function descriptions and usage examples
- Updated manifest to indicate Microsoft Graph dependencies
- Refined tenant management command documentation
Version 1.2.0
- Added tenant management with secure encrypted storage
- Automatic tenant selection menu for multi-tenant environments
- Certificate-based authentication bypass for stored tenants
- New functions: Get-StoredTenants, Show-StoredTenants, Remove-StoredTenant, Clear-StoredTenants
- Enhanced certificate validation and expiry handling for stored connections
- Supports up to 20 stored tenants with automatic cleanup
- Improved user experience with minimal login prompts
Version 1.1.2
- Removed emojis and glyphs from output for better compatibility across terminals
- Improved console output formatting with standard text characters
Version 1.1.1
- Added SharePointTenantName property for correct SharePoint URL detection
- Enhanced domain detection logic for multi-tenant scenarios
Version 1.1.0
- Added tenant information to return object (TenantName, PrimaryDomain, InitialDomain)
- Enhanced module to provide all necessary tenant context for consuming scripts
- Eliminates need for scripts to call Get-MgDomain themselves
Version 1.0.4
- Code cleanup and optimization
- Removed unnecessary validation checks that caused false warnings
- Streamlined module structure
Version 1.0.3
- Documentation cleanup and version update
Version 1.0.2
- Improved role assignment approach for better compatibility
- Added service principal propagation delay for better reliability
- Made Global Administrator role assignment optional with graceful failure handling
- Enhanced error handling to use warnings instead of hard failures
Version 1.0.1
- Fixed Exchange Online App-Only authentication by adding Exchange Administrator role assignment
- Enhanced role validation for existing app registrations
- Improved error handling for directory role assignments
Version 1.0.0
- Initial release
- Automated certificate creation and management
- App registration with comprehensive permissions
- Support for Exchange Online, SharePoint, Microsoft Graph, Teams, Azure, and Security & Compliance
- Enterprise-grade certificate validation and duplicate detection
- Automatic expired certificate cleanup
- Built-in help system with connection examples
FileList
- M365CertAuth.nuspec
- M365CertAuth.psd1
- M365CertAuth.psm1
Version History
| Version | Downloads | Last updated |
|---|---|---|
| 1.2.20 | 17 | 7/15/2026 |
| 1.2.16 | 125 | 2/27/2026 |
| 1.2.15 | 23 | 2/10/2026 |
| 1.2.8 | 15 | 12/12/2025 |
| 1.2.7 | 7 | 12/11/2025 |
| 1.2.6 | 10 | 10/22/2025 |
| 1.2.5 | 10 | 9/8/2025 |
| 1.2.4 | 16 | 9/5/2025 |
| 1.2.3 (current version) | 10 | 9/4/2025 |
| 1.2.1 | 9 | 9/4/2025 |
| 1.2.0 | 6 | 9/4/2025 |
| 1.1.2 | 9 | 9/4/2025 |
| 1.1.1 | 12 | 9/3/2025 |
| 1.1.0 | 7 | 9/3/2025 |
| 1.0.4 | 8 | 9/3/2025 |
| 1.0.3 | 7 | 9/3/2025 |
| 1.0.2 | 7 | 9/3/2025 |
| 1.0.1 | 7 | 9/3/2025 |
| 1.0.0 | 9 | 9/3/2025 |