I'm running vCenter 5.5 in a lab and am testing an upgrade to 6.0. At the first task to enter SSO and vCenter credentials, and I'm getting this error:
There is a problem authenticating into the legacy vCenter Server using the credentials provided by the user.
Resolution: Check if the vCenter server is up and running. Double check provided vCenter Server Credentials.”
The SSO user is firstname.lastname@example.org. This account works when logging into vCenter directly. When checking the Events tab in vCenter I see that no matter what user I use in the upgrade, when it is trying to authenticate to vCenter it is appending @127.0.0.1 to the end of the username. In this example it is using email@example.com@127.0.0.1 and failing. Same thing with local or domain accounts. I have not had luck when searching on how to fix this. Any suggestions would be appreciated.
Check if you are using these characters in your password
This is a known issue affecting vCenter Server 5.5 and occurs when the SSO password includes these special characters:
It will not work if you will use this.
Here is good blog
I came across that blog too when researching this error. I do not have any of those characters in the password. Thanks for the input. I still can't figure out how to get past this one.
Here i have found some of the blogs related this issue both of the blogs referring same resolution.
Please find below links it may be useful.