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MED-V 2.0 workspace setup fails with a fatal error

Article ID: 2504827 - View products that this article applies to.

SYMPTOMS

When installing the MED-V 2.0 workspace on a Windows 7 machine, a fatal error occurs and in the MED-V install log and the following error is reported:

0810 Decompressing VHD to: C:\ProgramData\Microsoft\Medv\Workspace\MEDV.vhd

0811 A generic exception occured while unpacking VHD

0812 System.IO.IOException: I/O error encountered in attempting to open file ---> Xceed.Compression.CompressionException: Expected end of stream not found

0813    at Xceed.Compression.ManagedDeflateDecompressor.Decompress(Byte buffer, Int32 offset, Int32 count, Boolean& endOfData, Byte& decompressed, Int32& remaining)

0814    at Xceed.Compression.CompressedStream.Read(Byte buffer, Int32 offset, Int32 count)

0815    at Xceed.Utils.Streams.ChecksumStream.Read(Byte buffer, Int32 offset, Int32 count)

0816    at Xceed.Zip.ReaderWriter.ZipReader.ReadItemData(Byte buffer, Int32 offset, Int32 count)

0817    at Microsoft.Medv.WorkspaceCustomActions.VhdUtil.Decompress(Session session, String compressedVhdPath, String vhdInstallationFilePath, Boolean overwriteExistingVhd)

0818    --- End of inner exception stack trace ---

0819    at Microsoft.Medv.WorkspaceCustomActions.VhdUtil.Decompress(Session session, String compressedVhdPath, String vhdInstallationFilePath, Boolean overwriteExistingVhd)

0820 at Microsoft.Medv.WorkspaceCustomActions.CustomActions.InstallVhd(Session session)0821 CustomAction InstallVhdFile returned actual error code 1603 (note this may not be 100% accurate if translation happened inside sandbox)

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CAUSE

This issue can be caused by antivirus software that is installed on the Windows 7 system if the real-time scanning component is configured to monitor the MED-V files.

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RESOLUTION

To resolve this issue, configure the real-time scanning component within your antivirus software to exclude the following files:
- *.VHD - These represent the Virtual Hard Disk Image files. These will be on all MED-V version 2.0 clients (Windows 7 host machines) running Workspaces.
  
  *.VSV - These represent Virtual PC Saved State files. These will be on all MED-V clients running Workspaces.
  
  *.MEDV - This is the packed image format used by MED-V version 2.0. These will be present on the MED-V mage Distribution Servers, locally packed images on MED-V Administration workstations, and as pre-staged images (workspaces) on the clients.
  
  *.VMC - These represent the Base Virtual Machine Settings File. Will be found on all MED-V v.2 Clients and test/packaging workstations.
  
  *.VUD - These represent Virtual PC Undo Disk Files. These may appear on testing/packaging workstations when test images are being used to finalize workspace policies.

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MORE INFORMATION

For information on adding exclusions or exceptions to a specific Anti-Virus software, please refer to the documentation provided by the vendor. For Microsoft Forefront, please review the following article: http://technet.microsoft.com/en-us/library/bb418942.aspx

(http://technet.microsoft.com/en-us/library/bb418942.aspx)

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Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use

(http://go.microsoft.com/fwlink/?LinkId=151500)

for other considerations.

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