Exchange Online Tenant Allow/Block List does not work when connected to Security & Compliance

Andres Bohren

2022-05-24

Hi All,

Recently i stumbled over a funny Error.

When query the Get-TenantAllowBlockListItems all looks fine until you connect to Security and Compliance (Connect-IPPSession). You will then see even Watson Error Messages 😂

I am using ExchangeOnlineManagement PowerShell Module Version 2.0.5.

Had a Case open: 30305990 - The Engineering Team is now aware. And will hopefully fix it in a future Version of the PowerShell Module.

Manage the Tenant Allow/Block List

https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/tenant-allow-block-list?view=o365-worldwide

Connect-ExchangeOnline
Get-TenantAllowBlockListItems -ListType Url -Block
Get-TenantAllowBlockListItems -ListType Url -ListSubType AdvancedDelivery

Connect-IPPSSession

Get-TenantAllowBlockListItems -ListType Url -Block
Get-TenantAllowBlockListItems -ListType Url -ListSubType AdvancedDelivery

To fix it simply run:

Disconnect-ExchangeOnline
Connect-ExchangeOnline

Regards

Andres Bohren