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ms365-tenant-manager Microsoft 365 tenant administration for Global Administrators. Automate M365 tenant setup, Office 365 admin tasks, Azure AD user management, Exchange Online configuration, Teams administration, and security policies. Generate PowerShell scripts for bulk operations, Conditional Access policies, license management, and compliance reporting. Use for M365 tenant manager, Office 365 admin, Azure AD users, Global Administrator, tenant configuration, or Microsoft 365 automation.
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name ms365-tenant-manager description Microsoft 365 tenant administration for Global Administrators. Automate M365 tenant setup, Office 365 admin tasks, Azure AD user management, Exchange Online configuration, Teams administration, and security policies. Generate PowerShell scripts for bulk operations, Conditional Access policies, license management, and compliance reporting. Use for M365 tenant manager, Office 365 admin, Azure AD users, Global Administrator, tenant configuration, or Microsoft 365 automation. compatibility opencode
Microsoft 365 Tenant Manager
Expert guidance and automation for Microsoft 365 Global Administrators managing tenant setup, user lifecycle, security policies, and organizational optimization.
Quick Start
Run a Security Audit
Connect-MgGraph -Scopes "Directory.Read.All","Policy.Read.All","AuditLog.Read.All"
Get-MgSubscribedSku | Select-Object SkuPartNumber, ConsumedUnits, @{N="Total";E={$_.PrepaidUnits.Enabled}}
Get-MgPolicyAuthorizationPolicy | Select-Object AllowInvitesFrom, DefaultUserRolePermissions
Bulk Provision Users from CSV
# CSV columns: DisplayName, UserPrincipalName, Department, LicenseSku
Import-Csv .\new_users.csv | ForEach-Object {
$passwordProfile = @{ Password = (New-Guid).ToString().Substring(0,16) + "!"; ForceChangePasswordNextSignIn = $true }
New-MgUser -DisplayName $_.DisplayName -UserPrincipalName $_.UserPrincipalName `
-Department $_.Department -AccountEnabled -PasswordProfile $passwordProfile
}
Create a Conditional Access Policy (MFA for Admins)
$adminRoles = (Get-MgDirectoryRole | Where-Object { $_.DisplayName -match "Admin" }).Id
$policy = @{
DisplayName = "Require MFA for Admins"
State = "enabledForReportingButNotEnforced" # Start in report-only mode
Conditions = @{ Users = @{ IncludeRoles = $adminRoles } }
GrantControls = @{ Operator = "OR"; BuiltInControls = @("mfa") }
}
New-MgIdentityConditionalAccessPolicy -BodyParameter $policy
Workflows
Workflow 1: New Tenant Setup Step 1: Generate Setup Checklist
Confirm prerequisites before provisioning:
Global Admin account created and secured with MFA
Custom domain purchased and accessible for DNS edits
License SKUs confirmed (E3 vs E5 feature requirements noted)
Step 2: Configure and Verify DNS Records
# After adding the domain in the M365 admin center, verify propagation before proceeding
$domain = "company.com"
Resolve-DnsName -Name "_msdcs.$domain" -Type NS -ErrorAction SilentlyContinue
# Also run from a shell prompt:
# nslookup -type=MX company.com
# nslookup -type=TXT company.com # confirm SPF record
Wait for DNS propagation (up to 48 h) before bulk user creation.
Step 3: Apply Security Baseline
# Disable legacy authentication (blocks Basic Auth protocols)
$policy = @{
DisplayName = "Block Legacy Authentication"
State = "enabled"
Conditions = @{ ClientAppTypes = @("exchangeActiveSync","other") }
GrantControls = @{ Operator = "OR"; BuiltInControls = @("block") }
}
New-MgIdentityConditionalAccessPolicy -BodyParameter $policy
# Enable unified audit log
Set-AdminAuditLogConfig -UnifiedAuditLogIngestionEnabled $true
$licenseSku = (Get-MgSubscribedSku | Where-Object { $_.SkuPartNumber -eq "ENTERPRISEPACK" }).SkuId
Import-Csv .\employees.csv | ForEach-Object {
try {
$user = New-MgUser -DisplayName $_.DisplayName -UserPrincipalName $_.UserPrincipalName `
-AccountEnabled -PasswordProfile @{ Password = (New-Guid).ToString().Substring(0,12)+"!"; ForceChangePasswordNextSignIn = $true }
Set-MgUserLicense -UserId $user.Id -AddLicenses @(@{ SkuId = $licenseSku }) -RemoveLicenses @()
Write-Host "Provisioned: $($_.UserPrincipalName)"
} catch {
Write-Warning "Failed $($_.UserPrincipalName): $_"
}
}
Validation: Spot-check 3–5 accounts in the M365 admin portal; confirm licenses show "Active."
Workflow 2: Security Hardening Step 1: Run Security Audit
Connect-MgGraph -Scopes "Directory.Read.All","Policy.Read.All","AuditLog.Read.All","Reports.Read.All"
# Export Conditional Access policy inventory
Get-MgIdentityConditionalAccessPolicy | Select-Object DisplayName, State |
Export-Csv .\ca_policies.csv -NoTypeInformation
# Find accounts without MFA registered
$report = Get-MgReportAuthenticationMethodUserRegistrationDetail
$report | Where-Object { -not $_.IsMfaRegistered } |
Select-Object UserPrincipalName, IsMfaRegistered |
Export-Csv .\no_mfa_users.csv -NoTypeInformation
Write-Host "Audit complete. Review ca_policies.csv and no_mfa_users.csv."
Step 2: Create MFA Policy (report-only first)
$policy = @{
DisplayName = "Require MFA All Users"
State = "enabledForReportingButNotEnforced"
Conditions = @{ Users = @{ IncludeUsers = @("All") } }
GrantControls = @{ Operator = "OR"; BuiltInControls = @("mfa") }
}
New-MgIdentityConditionalAccessPolicy -BodyParameter $policy
Validation: After 48 h, review Sign-in logs in Entra ID; confirm expected users would be challenged, then change State to "enabled".
Step 3: Review Secure Score
# Retrieve current Secure Score and top improvement actions
Get-MgSecuritySecureScore -Top 1 | Select-Object CurrentScore, MaxScore, ActiveUserCount
Get-MgSecuritySecureScoreControlProfile | Sort-Object -Property ActionType |
Select-Object Title, ImplementationStatus, MaxScore | Format-Table -AutoSize
Workflow 3: User Offboarding Step 1: Block Sign-in and Revoke Sessions
$upn = "departing.user@company.com"
$user = Get-MgUser -Filter "userPrincipalName eq '$upn'"
# Block sign-in immediately
Update-MgUser -UserId $user.Id -AccountEnabled:$false
# Revoke all active tokens
Invoke-MgInvalidateAllUserRefreshToken -UserId $user.Id
Write-Host "Sign-in blocked and sessions revoked for $upn"
Step 2: Preview with -WhatIf (license removal)
# Identify assigned licenses
$licenses = (Get-MgUserLicenseDetail -UserId $user.Id).SkuId
# Dry-run: print what would be removed
$licenses | ForEach-Object { Write-Host "[WhatIf] Would remove SKU: $_" }
Step 3: Execute Offboarding
# Remove licenses
Set-MgUserLicense -UserId $user.Id -AddLicenses @() -RemoveLicenses $licenses
# Convert mailbox to shared (requires ExchangeOnlineManagement module)
Set-Mailbox -Identity $upn -Type Shared
# Remove from all groups
Get-MgUserMemberOf -UserId $user.Id | ForEach-Object {
try { Remove-MgGroupMemberByRef -GroupId $_.Id -DirectoryObjectId $user.Id } catch {}
}
Write-Host "Offboarding complete for $upn"
Validation: Confirm in the M365 admin portal that the account shows "Blocked," has no active licenses, and the mailbox type is "Shared."
Best Practices
Tenant Setup
Enable MFA before adding users
Configure named locations for Conditional Access
Use separate admin accounts with PIM
Verify custom domains (and DNS propagation) before bulk user creation
Apply Microsoft Secure Score recommendations
Security Operations
Start Conditional Access policies in report-only mode
Review Sign-in logs for 48 h before enforcing a new policy
Never hardcode credentials in scripts — use Azure Key Vault or Get-Credential
Enable unified audit logging for all operations
Conduct quarterly security reviews and Secure Score check-ins
PowerShell Automation
Prefer Microsoft Graph (Microsoft.Graph module) over legacy MSOnline
Include try/catch blocks for error handling
Implement Write-Host/Write-Warning logging for audit trails
Use -WhatIf or dry-run output before bulk destructive operations
Test in a non-production tenant first
Reference Guides references/powershell-templates.md
Ready-to-use script templates
Conditional Access policy examples
Bulk user provisioning scripts
Security audit scripts
references/security-policies.md
Conditional Access configuration
MFA enforcement strategies
DLP and retention policies
Security baseline settings
references/troubleshooting.md
Common error resolutions
PowerShell module issues
Permission troubleshooting
DNS propagation problems
Limitations Constraint Impact Global Admin required Full tenant setup needs highest privilege API rate limits Bulk operations may be throttled License dependencies E3/E5 required for advanced features Hybrid scenarios On-premises AD needs additional configuration PowerShell prerequisites Microsoft.Graph module required
Required PowerShell Modules Install-Module Microsoft.Graph -Scope CurrentUser
Install-Module ExchangeOnlineManagement -Scope CurrentUser
Install-Module MicrosoftTeams -Scope CurrentUser
Required Permissions
Global Administrator — Full tenant setupUser Administrator — User managementSecurity Administrator — Security policiesExchange Administrator — Mailbox management 