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When you use Windows Vista Event Viewer to examine logfiles collected on earlier clients such as Windows XP or Windows Server 2003, those events are in a wrong order and the sources are missing. This occurs because the new design of the Windows Vista event formats. Vista uses the new evtx format that introduces several new event objects that do not match earlier resource dlls.
To view earlier event logs under Vista, you will need at least Windows XP or Windows Server 2003 clients as resource. To read the log files in the format that was used, follow these steps:
1. Register legacy Event Viewer snap-in (els.dll) from XP or Windows Server 2003:
Note After registration, the MMC Add and Remove Snap-ins list shows the Classic Event Viewer option.
a. Open mmc.exe.
b. Locate Add and Remove Snap-ins, and then add Classic Event Viewer to the console root.
c. Click New Window from Here, and then save as ClassicEventViewer.msc.
2. Convert the earlier .evt files to .evtx format. To do this, follow these steps:
a. Use the Vista built-in tool wevtutil.exe. set wevtutil epl eventlog.evt eventlog.evtx /lf:true.
Note: wevtutil is located in windows\system32 directory.
b. Rename the .evtx to .evt by using the following command:
rename eventlog.evtx eventlog-x.evt.
3. Start Classic Event Viewer with the following command:
Note: The /auxsource name is given UNC format: /auxsource=\\computername (!), not as documented /auxsource=computername.
You should be able to see XP-style formatted events after you follow these steps.
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