Hotfix

A hotfix is a software update that is released outside the normal update cycle or intended to be applied to a live system; often to fix a bug.^[1]

Originally, hotfix referred to patching a hot system – a production server that is actively serving clients. For development, such a change usually must be designed quickly and outside normal development processes; at relatively high cost and disrupting other development effort. For the user, a hotfix is relatively risky since it is applied to a server without time for testing it. The risk of applying the hotfix must be weighed against the risk of not applying it. The problem to be fixed might be so critical that inaction is riskier than the potential loss of service.

Over time, the meaning has shifted to an update that is created with urgency or released outside the normal update cycle for the software.

Applying (installing) a hotfix generally involves the same process as any software update. Most modern operating systems and desktop applications can download and apply updates automatically. Network administrators may use software programs to automate and simplify applying updates to the machines they manage.

Use by Microsoft

Microsoft Corporation used the terms hotfix or quick-fix engineering update (QFE)^[2][3] but has stopped in favor of new terminology. Updates are either delivered in the general distribution release (GDR) channel or the limited distribution release (LDR) channel – the latter synonymous with QFE. GDR updates receive extensive testing whereas LDR updates are meant to fix a certain problem in a small area and are not released to the general public. GDR updates may be received from the Windows Update service or the Microsoft Download Center but LDR updates must be received via Microsoft Support.^[4][5]

See also

• JUpdater
• Patch (computing) – Data intended for modifying an existing software resource
• Service pack – Single installable package of software updates
• Shavlik Technologies – Midwest InspectorScan Software-as-Service (SaaS) innovator
• StableUpdate

References

1. Bragg, Roberta (2003). "5: Designing a Security Update Infrastructure". MCSE Self-Paced Training Kit (Exam 70–298): Designing Security for a Microsoft Windows Server 2003 Network. Redmond, WA: Microsoft Press. p. 5–12. ISBN 0735619697.
2. Mu, Chris (26 December 2007). "Something about Hotfix". HotBlog. Microsoft. Retrieved 8 November 2012.
3. "Description of the contents of Windows XP Service Pack 2 and Windows Server 2003 software update packages (revision 11.1)". Support. Microsoft. 16 January 2008. Retrieved 8 November 2012.
4. "What is the difference between general distribution and limited distribution releases?". MSDN Blogs. Microsoft. 11 March 2008. Retrieved 8 November 2012.
5. Adams, Paul (14 May 2009). "GDR, QFE, LDR... WTH?". TechNet Blogs. Microsoft. Retrieved 8 November 2012.