Search for:

Available article translations:

Error message "Hdd file is used by another application".

  • Parallels Desktop 3 for Mac
  • Parallels Desktop 2.x for Mac


After you restart your Mac, Parallels Desktop does not start the VM, saying that "Parallels Desktop is unable to access the virtual hard disk image file winxp.hdd. The file is used by other application".


Check if there is a lock file inside the HDD package:

1) Make sure that Parallels Desktop is not running.

2) Open the folder of your Virtual Machine in Finder, e.g. Your 'user' home > Documents > Parallels > Windows XP, you will see .hdd package there.

3) Right-click (CTRL+click for 'Mac' mouse or SHIFT+CTRL+click for 'Mac' mouse) on the .hdd file and select "Show Package Contents".

4) If you see the file DiskDescriptor.xml.lck then drag it to the Trash and empty Trash. Do NOT mix it up with and do NOT delete DiskDescriptor.xml file!

5) Try to start Parallels Desktop and your Virtual Machine.

6c0bc137413ef2b485c9418f5dd9403a 1e5db16426987d561060acdf56d947b4 33c4522b6fa9ca8e050f19b889fb58f1 add78cd663c4b3736f2c866e82d5ef12

Was this article helpful?
Tell us how we may improve it.
Yes No
Desktop Virtualization
- Parallels Desktop 9 for Mac
- Parallels Transporter
- Parallels Desktop Switch to Mac Edition
- Parallels Desktop for Mac Enterprise Edition
- Parallels Management-Mac for Microsoft SCCM
Server Virtualization
- Parallels Cloud Server
- Parallels Containers for Windows 6.0
- Parallels Virtuozzo Containers
- Parallels Automation
- Parallels Automation for Cloud Infrastructure
- Parallels Business Automation Standard
- Parallels Virtual Automation
- Parallels Plesk Panel Suite
- Web Presence Builder
- Parallels Plesk Automation
- Parallels Small Business Panel
- Value-added Services for Hosters
- Parallels Partner Storefront
Services & Resources
- Cloud Acceleration Services
- Professional Services
- Support Services
- Training & Certification