Active Discovery discovery fails and the task stops with the following error :
"System.nullreferenceException: Object reference not set to an instance of an object"
Not collecting Groups or users information will allow the discovery to complete without issue.
The following is recorded in the Discovery logs when set to DEBUG:
DirectoryContext Created(DC1.Domain.com)
PagedSearch(nc=LDAP://DC=Domain,DC=com,f=(&(objectClass=user)(!PrimaryGroupID=513)(!PrimaryGroupID=514)(!PrimaryGroupID=515)(!PrimaryGroupID=516)))
Error occurred in the nodeSystem.NullReferenceException: Object reference not set to an instance of an object.