Microsoft KB Archive/305858

= Windows 2000 Cannot Open Windows XP .blg Log Files =

Article ID: 305858

Article Last Modified on 12/1/2007

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional
 * Microsoft Windows XP Professional x64 Edition

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This article was previously published under Q305858





SYMPTOMS
If you attempt to open a Windows XP binary performance log (.blg) file in Windows 2000, you receive the following error message:

System Monitor Control

Data source  is either invalid or cannot be found. System message: The specified log file type has not been installed on this system.



CAUSE
Even though the file name extension is the same, the format of .blg files is changed in Windows XP. This new format cannot be read by System Monitor in Windows 2000.



RESOLUTION
To work around this issue, use either of the following methods:
 * Use the Relog.exe command-line tool to convert the .blg file from the Windows XP format to a format that Windows 2000 System Monitor can read (such as the .tsv or .csv format).
 * Open the log on a Windows XP-based computer.



STATUS
This behavior is by design.



MORE INFORMATION
To convert a .blg file from Windows XP format to a .csv file, follow these steps:  On the Windows XP-based computer, start a command prompt by clicking Start, pointing to Run, typing cmd, and then clicking OK. Change directories to the folder that contains the .blg file. At the command prompt, type

relog  -f CSV -o

where  is the Windows XP .blg file, and   is the name of the file that will be created in the new format.

 Copy the new file to the Windows 2000-based computer and open it with System Monitor.</ol>

For additional information and the syntax for Relog.exe, use Windows XP Help and Support Center. For additional information about Windows 2000 System Monitor, click the article number below to view the article in the Microsoft Knowledge Base:

248345 How to Create a Log Using System Monitor in Windows 2000

Additional query words: sysmon perfmon

Keywords: kbenv kbprb KB305858

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