Commands › Exchange Online

Remove-BlockedConnector

Exchange Online ExchangeOnlineManagement Remove-*

Unblock inbound connectors that have been detected as potentially compromised. Blocked connectors are prevented from sending email.

Quick start script

# Remove-BlockedConnector — quick start (serv365.ai)
# 1. Connect (app-only shown; interactive: omit the certificate parameters)
Connect-ExchangeOnline -CertificateThumbprint $thumb -AppId $appId -Organization $org

# 2. Capture the current state first — you cannot roll back what you never recorded
$before = Get-BlockedConnector
$before | Format-List

# 3. Make the change
Remove-BlockedConnector -ConnectorId <Guid>

# 4. Verify and diff
$after = Get-BlockedConnector
Compare-Object ($before | Out-String) ($after | Out-String)

Syntax

Remove-BlockedConnector -ConnectorId <Guid> [-Reason <String>] [<CommonParameters>]

Parameters (2)

ParameterTypeRequiredWhat it controls
-ConnectorId Guid yes The ConnectorId parameter specifies the blocked connector that you want to unblock. The value is a GUID (for example, 159eb7c4-75d7-43e2-95fe-ced44b3e0a56). You can find this value from the output of the...
-Reason String The Reason parameter specifies comments about why you're unblocking the blocked connector. If the value contains spaces, enclose the value in quotation marks (").

Reference facts derived from Microsoft documentation, © Microsoft, licensed CC BY 4.0; restructured with original guidance by serv365.ai.