Authentication Logon Failure 0xC000006D

My reporting server 2008 just starting giving me errors when I try to login.  Error is as follows:


Logon Failure:
  Reason:  An error occurred during logon
  User Name: user.name
  Domain:  domain
  Logon Type: 3
  Logon Process: À9•
  Authentication Package: NTLM
  Workstation Name: ServerName
  Status code: 0xC000006D
  Substatus code: 0x0
  Caller User Name: -
  Caller Domain: -
  Caller Logon ID: -
  Caller Process ID: -
  Transited Services: -
  Source Network Address: -
  Source Port: -

It was working fine yesterday... ssrs 2008 log file has no info.