Firefox Fixes Stability Issue on Intel Raptor Lake PCs After Year-Long Effort

• May 24, 2026

Mozilla has addressed a persistent issue causing Firefox to crash on desktop computers equipped with Intel’s Raptor Lake processors. The problem, which impacted the browser’s stability on these systems, has been resolved with the release of Firefox version 151.01.

Year-long effort to fix Raptor Lake-related crashes

Users running Firefox on Intel’s latest-generation Raptor Lake desktop CPUs experienced frequent crashes, disrupting browsing sessions and reducing productivity. Identifying and correcting the underlying cause required extensive investigation by Mozilla’s engineering team.

The fix marks the culmination of over a year of work dedicated to restoring Firefox’s reliability on hardware featuring Intel’s new architecture. With version 151.01, the browser’s default operating mode now runs stably as intended, reflecting significant effort spent on troubleshooting and patching.

This development is particularly important as the adoption of Raptor Lake processors grows and web browser performance remains a critical factor for users. Ensuring compatibility and stability across various CPU platforms remains a major priority for browser developers, especially given the intricate interactions between software and complex processor designs.

Although detailed technical explanations of the bug and its resolution have not been broadly disclosed, the resolution through Firefox updates highlights ongoing collaboration between browser developers and hardware platforms to maintain smooth user experiences.

Users affected by this issue are encouraged to update to the latest Firefox version to benefit from these stability improvements. Mozilla continues to monitor performance and address any residual bugs as part of its commitment to providing a robust and efficient browsing environment.

Mozilla resolved a crash issue in Firefox affecting Intel Raptor Lake desktop processors, restoring stable operation in version 151.01 after a year-long fix.