| Event Id | 21139 |
| Source | Microsoft Firewall |
| Description | ISA Server detected that IP address %1 was removed from network "%2". |
| Event Information | According to Microsoft Cause: The computer's network configuration has changed. Resolution: Verify that the change was intentional. If it was intentional, then you can ignore this event. If it was not intentional, then add the IP address back to the network. To to this, in the console tree of ISA Server Management click Configuration, then click Networks. In the details pane, click the Networks tab. In the details pane, select the network, from the right-click menu click Properties, then click Addresses. |
| Reference Links | Event Id:21139 Source Id:Microsoft Firewall |
Catch threats immediately
We work side-by-side with you to rapidly detect cyberthreats
and thwart attacks before they cause damage.