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Cannot start virtual machine with [Unable to authenticate the user] error message

APPLIES TO:
  • Parallels Desktop 7 for Mac
  • Parallels Desktop 6 for Mac

ISSUE

When trying to start the virtual machine, you receive the error message: "Unable to authenticate the user."

CAUSE

prlctl set "Virtual Machine Name" --start-as-user username:password

command was executed. And now the virtual machine is set up to start under a specific user.

Resolution

NOTE: We strongly recommend that you make a backup of the virtual machine before following the below troubleshooting steps.


Once the backup is ready, right-click on your virtual machine in the Virtual Machine list →  Show in Finder → Right Click on PVM file → Show Package Contents → choose config.pvs → Open with → Others → select Text Edit
 
You will see lines similar to these in your config.pvs file:

<VmStartLoginMode>2</VmStartLoginMode>
<VmStartAsUser>Username</VmStartAsUser>
<VmStartAsPassword>Password</VmStartAsPassword>

Please make the following changes:

<VmStartLoginMode>0</VmStartLoginMode>
<VmStartAsUser></VmStartAsUser>
<VmStartAsPassword></VmStartAsPassword>



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