Cannot login to Exchange 2016 Admin Centre

[Steve202]

I've just installed Exchange 2016 on a new server however I can't access the Exchange Admin Centre. I enter my username and password, click sign in and I get:
The username or password you entered is not correct. Try entering it again.

If I try and access the Exchange Management Shell, I get access denied, so I believe there's some permissions screwed up.

My username/password is correct and a domain admin. I'm trying to migrate everything over from SBS 2011 to a new server (2012r2 and exchange 2016) and this is the only thing left to do. Any ideas?

 

[Mick]

Just for a quick test, try creating another admin user and see if that user can log-in - might help narrow things down a little - i.e. show if it's a screw-up with just one account or a general thing.

 

[Steve202]

Doesn't work unfortunately, same thing happens. Gave it domain admins and also organisation management.

 

[TurricanII]

Check the computer account of the Ex2016 server is not a member of

• Domain Admins
• Schema Admins
• Enterprise Admins
• Organization Management

https://support.microsoft.com/en-gb/kb/2898571

 

[Steve202]

Check the computer account of the Ex2016 server is not a member of

• Domain Admins
• Schema Admins
• Enterprise Admins
• Organization Management

https://support.microsoft.com/en-gb/kb/2898571

Not a member of any of those

 

[Steve202]

Not sure if it's related, but there's an entry int he event logs every minute: Could not load file or assembly 'Microsoft.Exchange.FrontEndHttpProxy' or one of its dependencies.

 

[YeOldeStonecat]

You're doing domainname\username format right?

 

[Steve202]

You're doing domainname\username format right?

Tried:
domainname.local\username
domainname\username

 

[TurricanII]

Have you run any process to disable TLS 1.0 such as IIS Crypto? Exchange still needs it and Powershell/EAC will stop working if you disable it.

Also, is your Exchange server computer account a member of the Exchange Trusted Subsystem group and is the Exchange Trusted Subsystem group a member of Domain Admins?

 

[Steve202]

Have you run any process to disable TLS 1.0 such as IIS Crypto? Exchange still needs it and Powershell/EAC will stop working if you disable it.

Not that I'm aware of.