ADMT error - Access denied

Hi Experts,

I am in a migration phase and I need some help please.

I have running an ADMT server and this server was working since end of 11.2019.
But now I have a problem to select the source domain when I like to migrate some users.

ADMT is unable to connect to domain controller....Access is denied.

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ADMT
The trust is tested and ok.
The user is a domain admin in both forests.
The servers are reachable via PING in both directions.
The local firewalls are disabled on both servers.

Do you have any ideas ?
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AlexA lack of information provides a lack of a decent solution.

Commented:
Eprs_AdminSystem Architect

Author

Commented:
Hi Alex,

I already have set this reg key.

Still I cannot select a source domain controller.
AlexA lack of information provides a lack of a decent solution.

Commented:
The only other thing I can recommend is going through the security logs and see why it's failing. Rephrase that, I need the error from the security log so we can figure out the issue

Do you have different Domain names or are they similar?
Eprs_AdminSystem Architect

Author

Commented:
Hi Alex,

the domain names are differnet.

And just remember, it was working last month with this installation.
AlexA lack of information provides a lack of a decent solution.

Commented:
I understand it was working last month, doesn't change the fact it's not working now and we need to figure out what's happened, as such we go back to the easiest solutions to figure it out.

Have you gone through the security log to find out why you're getting access denied? It should give you more information and then we can go from there.

Regards
Alex
Eprs_AdminSystem Architect

Author

Commented:
on which server DC or ADMT ?
Eprs_AdminSystem Architect

Author

Commented:
on both servers noting to find in the security log :-(
Eprs_AdminSystem Architect

Author

Commented:
the error is : 0x80070005
AlexA lack of information provides a lack of a decent solution.

Commented:
ok,

Lets clear something up, when I ask you to go into the event log to check the security event that your login is causing, it's because it's got more information in there rather than an 0x code. I don't ask for further information just for the sheer fun of it, I ask for specific details because that's EXACTLY what I need.

That 0x80070005 is a GENERIC access denied code, which is WHY I need the event from the security log, which will almost certainly provide further information about what is going on.

Regards
Alex
Eprs_AdminSystem Architect

Author

Commented:
Hi Alex, please be more clear...

From which server you need this log ?
AlexA lack of information provides a lack of a decent solution.

Commented:
It'll be on the remote server doing your authentication.


Thanks
Alex
Eprs_AdminSystem Architect

Author

Commented:
no error logs on the DC and ADMT
Shaun VermaakSenior Consultant
Awarded 2017
Distinguished Expert 2018
Commented:
Eprs_AdminSystem Architect

Author

Commented:
yes we did.

I found now the solution.

Everything was fine with ADMT coniguration and trusts :-)
System Architect
Commented:
I found out,

the ADMT server had the wrong subnet mask and wrong old gateway.
Eprs_AdminSystem Architect

Author

Commented:
Thanks for your help and time :-)

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