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Problems with starting Parallels Desktop 6 virtual machines in earlier versions

APPLIES TO:
  • Parallels Desktop 6 for Mac Standard Edition
  • Parallels Desktop 5 for Mac Standard Edition
  • Parallels Desktop 4 for Mac Standard Edition

Symptoms and Cause

If the virtual machine created in Parallels Desktop 6 fails to start in previous versions of Parallels Desktop (for example, in Parallels Desktop 5), the most probable reason is that you are trying to start an encrypted virtual machine. The virtual machines, encrypted in Parallels Desktop 6, cannot work in previous versions of Parallels Desktop. If you try to start such a virtual machine in a previous version of Parallels Desktop, the virtual machine will not start and its configuration file will become corrupted. This means that after this failure you will not be able to start the virtual machine in Parallels Desktop 6.

 

How to restore the corrupted virtual machine

If you tried to start the virtual machine, encrypted in Parallels Desktop 6, in a previous version of Parallels Desktop and the virtual machine became corrupted, you can do the following to restore it:

Note: Snapshots (if any) and all the unsaved data (if the virtual machine was suspended) cannot be restored.

  1. Start Parallels Desktop 6 and create a new identical virtual machine. To this effect, choose New from the File menu and follow the wizard instructions.

  2. When the virtual machine is ready, encrypt it. Choose Configure from the Virtual Machine menu, select the Options tab, and click Security. In the Security pane, click Encryption: Turn On and specify a password to work with the virtual machine.

  3. Now you need to add the virtual hard disk of the corrupted virtual machine to the newly created virtual machine. Select the latter virtual machine and make sure it is shut down. Choose Configure from the Virtual Machine menu, select the Hardware tab, click the Add button , and choose Hard Disk.

     

    In the displayed window, choose Existing image file from the Type menu, select Choose a file from the Location menu, and select the virtual hard disk (the file with the .hdd extension) of the corrupted virtual machine.

     


    Note: Virtual hard disks are stored in the .PVM bundles of the corresponding virtual machines, which in their turn, are usually stored either in the Home/Documents/Parallels or in the Users/Shared/Parallels directory.

  4. After you select this hard disk, enter the password you used to encrypt the virtual machine that later became corrupted. Click OK twice to save the changes. Now you can start the virtual machine. All the data stored on the hard disk of the corrupted virtual machine will be available in the newly created virtual machine.



How to start the virtual machine, encrypted in Parallels Desktop 6, in previous versions of Parallels Desktop

If you want to start the virtual machine, encrypted in Parallels Desktop 6, in a previous version of Parallels Desktop, first you need to decrypt it. After you decrypt the virtual machine, you can work with it in previous versions of Parallels Desktop.

To decrypt a virtual machine, follow these steps:

  1. Start Parallels Desktop 6 and select the encrypted virtual machine. The virtual machine must be shut down.

  2. Choose Configure from the Virtual Machine menu, select the Options tab, and click Security.

  3. In the Security pane, click Encryption: Turn Off.

  4. When prompted, specify the password provided to encrypt this virtual machine and click OK. The virtual machine will be decrypted and ready to work in previous versions of Parallels Desktop.




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