| Event Id | 1170 |
| Source | Active Directory |
| Description | Internal error: The expression %1 was false at line %2 of file %3. Please contact Microsoft Product Support Services for assistance. |
| Event Information | This event is an Active Directory internal error. |
| Reference Links | Monitoring AD Changes: Article |
Catch threats immediately
We work side-by-side with you to rapidly detect cyberthreats
and thwart attacks before they cause damage.