Microsoft KB Archive/930838

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Error message in the SoftGrid Virtual Application Server log file: "41486 'Invalid chunk size: <xxxxxx> bytes'"

Article ID: 930838

Article Last Modified on 4/16/2007


  • Microsoft SoftGrid for Terminal Services
  • Microsoft SoftGrid for Windows Desktops


The following error message is logged in the SoftGrid Virtual Application Server log file (Sft-server.log):

41486 "Invalid chunk size: xxxxxx bytes."

Note "Invalid chunk size" is incorrect. The message should read "Invalid block size."


This issue occurs because the Max Block Size value of the SoftGrid Virtual Application Server is smaller than the Max Block Size value in the .sft file.


To resolve this issue, increase the Max Block Size value in the SoftGrid Virtual Application Server to be equal to or greater than the Max Block Size value in the .sft file. To do this, follow these steps:

  1. Open the Sft-server.log file by using a text editor such as Notepad.
  2. Locate the "Invalid raw data request" line that resembles the following example:

    [0000-00-00 00:00:00.000] SoftGrid Virtual Application Server Name 3368 1512 SW_CacheHandle::GetRawData - "Default Provider" user_namefilename.sft 2 41503 "Invalid raw data request: 671004 bytes."

  3. Note the size of the "Invalid raw data request" (in this example, the size is 671004 bytes).
  4. Round the size up, and then convert the size to kilobytes (KB) (in this example, convert the size to 672 KB).
  5. Start the SoftGrid Management Console.
  6. Expand SoftGrid Systems, expand server_name, expand Server Groups, and then expand Default Server Group.
  7. Right-click SoftGrid Virtual Application Server, and then click Properties.
  8. Click the Advanced tab.
  9. For Max Block Size (KB), type 672.

    Note The default Max Block Size (KB) setting is 512.
  10. Click OK.
  11. Stop and then restart the SoftGrid Virtual Application Server service.


Depending on the version of the SoftGrid Client that you are running, an application that has an invalid block size will not start. Additionally, you will receive one of the following error codes:

Error code: xxxxxx-xxxxxx0A-200001F4

Error code: xxxxxx-xxxxxx0B-8016B02B

Error code: xxxxxx-xxxxxx0A-01F48016

Error code: xxxxxx-xxxxxxxx-01F48013

For more information about these error codes, click the following article numbers to view the articles in the Microsoft Knowledge Base:

930611 SoftGrid Client "Error code: xxxxxx-xxxxxx0A-200001F4"

930768 Error message when you try to start an application in Microsoft SoftGrid: "Error code: xxxxxx-xxxxxx0B-8016B02B"

930766 SoftGrid Client "Error code: xxxxxx-xxxxxx0A-01F48016"

930765 SoftGrid Client "Error code: xxxxxx-xxxxxxxx-01F48013"

Keywords: kbexpertiseinter kbtshoot KB930838