The following error occurs when testing connection with the target SharePoint or during migration process:
"Unable to connect to the Notes Migrator for SharePoint Import Service at 'http://server:port/ImportSession.svc' due to the following error: 'SOAP security negotiation with 'http://server:port/ImportSession.svc' for target 'http://server:port/ImportSession.svc' failed."
The issue can be possibly caused by insufficient permissions of the Import Service application pool identity.
Please change the identity of the Import Service application pool (via Internet Information Services (IIS) Manager) to the same account as the application pool identity of the target SharePoint site. In case of Active Directory account, it should be specified in the configuration of the Import Service for the appropriate target site collection.
N/A
