Files that contain the .wer file extension are most commonly associated with the Windows Error Reporting utility software that is included with the Windows operating system. When the Windows Error Reporting application generates an error report, it saves the report with the .wer file extension.
The WER files that are created by the system contain information about software crashes and allow users to report the errors to Microsoft Corporation. This helps Microsoft debug issues that may be occurring with their software products.
The WinSQL E/R software program also uses the .wer file extension. These WER files contain diagram files that are created with the software application.
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