Vcenter appliance login problem

As of last week our backups started failing due "Cannot complete login due to an incorrect user name or password" error with Acronis vmProtect 9.

when trying to login into the vcenter appliance with the vsphere client we get a "Cannont complet login due to an incorrect user name or password".

Password has not been changed and the vcenter appliance is not integrated into active directory.

We tried rebooting the server, it did not help. The ESXi version is 5.5.
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IT MeetjeslandAsked:
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AbhilashBloggerCommented:
Is this happening with the root user?
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IT MeetjeslandAuthor Commented:
Yes it is.
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AbhilashBloggerCommented:
Have you changed the root password lately? The root password sometimes expires in 90 days. If you haven't set the expiration days i'm guessing this might be your issue.

Refer this below KB Article which tells you how to reset the root password for vCenter server appliance.
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2069041
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IT MeetjeslandAuthor Commented:
This worked perfectly, thanks!
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Windows Server 2012

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