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VA Technical Reference Model v 24.4

Error Logging Modules and Handlers (ELMAH)
Error Logging Modules and Handlers (ELMAH) Technology

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Technologies must be operated and maintained in accordance with Federal and Department security and privacy policies and guidelines. More information on the proper use of the TRM can be found on the TRM Proper Use Tab/Section.

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Description: Error Logging Modules and Handlers (ELMAH) is an open source debugging solution for Active Server Pages (ASP.NET) web services. ELMAH logs nearly all unhandled exceptions. When added to a running web application on a machine, exceptions trigger event handlers. These event handlers can include logging to various database back-ends, logging which can be viewed from a web portal, and the sending of notification emails, tweets, and Rich Site Summary (RSS) articles to advise administrators of the problem. ELMAH provides a pluggable implementation of error logging.

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By default, errors are stored in memory, therefore they do not survive application restarts or server resets, but other non-volatile persistence stores are also available. These stores include one which logs exceptions to Extensible Markup Language (XML) files and another for the SQLite database engine. ELMAH contains additional error log providers that can be used to log errors to an Oracle Database, PostgreSQL, Microsoft Structured Query Language (SQL) Server, and other data stores. ELMAH has an integrated security setting. The software provides a switch to block access to its error reports from remote locations (allowing only local access), which can be enabled via configuration. ASP.NET also provides its own authorization mechanism.
Technology/Standard Usage Requirements: Users must ensure their use of this technology/standard is consistent with VA policies and standards, including, but not limited to, VA Handbooks 6102 and 6500; VA Directives 6004, 6513, and 6517; and National Institute of Standards and Technology (NIST) standards, including Federal Information Processing Standards (FIPS). Users must ensure sensitive data is properly protected in compliance with all VA regulations. Prior to use of this technology, users should check with their supervisor, Information Security Officer (ISO), Facility Chief Information Officer (CIO), or local Office of Information and Technology (OI&T) representative to ensure that all actions are consistent with current VA policies and procedures prior to implementation.
Section 508 Information: This technology has not been assessed by the Section 508 Office. The Implementer of this technology has the responsibility to ensure the version deployed is 508-compliant. Section 508 compliance may be reviewed by the Section 508 Office and appropriate remedial action required if necessary. For additional information or assistance regarding Section 508, please contact the Section 508 Office at
Decision: View Decisions

Decision Source: TRM Mgmt Group
Decision Process: One-VA TRM v20.4
Decision Date: 04/16/2020 at 14:49:33 UTC
Aliases: ELMAH
Introduced By: TRM Request
Vendor Name: Atif Aziz
- The information contained on this page is accurate as of the Decision Date (04/16/2020 at 14:49:33 UTC).