Microsoft Windows 98/Me Dr. Watson log
File type: Document file
A WLF file is a diagnostic log created by Dr. Watson, a troubleshooting tool included with Microsoft Windows 98 and Windows Me.
Found 2 different file type records with the same wlf filename suffix.
File type category:
Document file
Date updated: October 12, 2026
Record marked as obsolete and not updated for a long time.
Dr. Watson was a Microsoft Windows diagnostic tool that recorded information when an application or system error occurred. The resulting WLF file contains a log generated by Dr. Watson.
This format belongs to the legacy Windows 98 and Windows Me versions of Microsoft Windows and is now obsolete. It is not normally created by current Windows versions.
Open the file with Dr. Watson on a compatible Windows 98 or Windows Me system. Current versions of Windows generally do not include the legacy Dr. Watson component needed to read this format.
There is no standard conversion from a WLF file to another document format. It is a diagnostic record intended for viewing with the compatible version of Dr. Watson rather than for reuse as an editable document.
Software apps that create wlf files:
Microsoft Windows
File type category:
Various data file
Date updated: October 12, 2026
Record marked as obsolete and not updated for a long time.
The wlf file extension identifies an upload-data file used by Argo WebLoad, a software application for Microsoft Windows.
An wlf file stores upload data created or used by Argo WebLoad.
Argo WebLoad and this file format are considered obsolete, so WLF files are unlikely to be encountered in current software.
Open a wlf file with Argo WebLoad on Microsoft Windows, if the original application is available.
If the file can still be opened in Argo WebLoad, use any export functions provided by the original Windows application to recover its data.
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