The MNE Pre-Requisite Checker authentication fails when connecting to Active Directory. (4238018)

The MNE Pre-Requisite Checker authentication fails when connecting to Active Directory.

Migrator Notes for Exchange environment details:

MNE: 4.12.1.52 and with 4.12.1.45 Windows 7 SP1 64 Bit (physical and virtual).
Migrating from: Domino 8.5.3 FP6 Windows 2008 R2
Lotus Notes: 8.5.3 FP6
Migrating to: Office 365 and the MNE Pre-Requisite Checker is configured for tenant with dirsync (hence why it tries to check with Active Directory).
SQL: 2008 R2 Windows 2012

The Pre-Requisite Checker captures the following Active Directory error messages:

[10] ERROR ActiveDirectoryProbe - System.Exception: Authentication with Active Directory server '' failed for user 'domain\vere_admin'. ---> System.Runtime.InteropServices.COMException (0x80005000): Unknown error (0x80005000)

[11] ERROR ActiveDirectoryProbe - System.Exception: Authentication with Active Directory server '' failed for user 'domain\vere_admin'. ---> System.Runtime.InteropServices.COMException (0x80005000): Unknown error (0x80005000)

[6] ERROR ActiveDirectoryProbe - System.Exception: Authentication with Active Directory server '' failed for user 'vere_admin@domain.com'. ---> System.Runtime.InteropServices.COMException (0x80005000): Unknown error (0x80005000)

[8] ERROR ActiveDirectoryProbe - System.Exception: Authentication with Active Directory server '' failed for user 'vere_admin@domain.com'. ---> System.Runtime.InteropServices.COMException (0x80005000): Unknown error (0x80005000)

This a generic error message that points to Active Directory having an authentication issue for that user and will need to be checked out.

The following items will help resolve this issue:

- Make sure that the Pre-Requisite Checker is used whilst logged in as an Administrator and right click on the Pre-Requisite Checker icon to select “Run as administrator”.
- Also make sure that the pre-requites of .net 3.5 SP1, 4.0 and 4.5 are installed as per the Pre-Migration Planning User Guide on the following link:

https://support.quest.com/migrator-for-notes-to-exchange/technical-documents

- Additionally is Microsoft IIS 7 or later is being used with a web application pool running .Net 3.5 SP1 and 4.0; as must be reachable from all migration servers?

- Once all items are installed and the servers have been rebooted, try the following command:

C:\windows\Microsoft.Net\Framework\v2.0.50727\aspnet_regiis -ga domain\service_account

Check that the Framework version matches the ones you have installed and adjust accordingly.
Also make sure to change the 'domain\service_account' to match what is in use in your environment.

- Maybe all the migration servers couldn't communicate with a domain controller in the forest?

- Is Active Directory in good shape? Run dcdiag to make sure Active Directory is all OK:

https://technet.microsoft.com/en-us/library/cc776854(v=ws.10).aspx
https://technet.microsoft.com/en-gb/library/cc731968.aspx