Why Rider and ReSharper Were Slow to Start, and How Microsoft Helped Fix the Problem

JetBrains enabled its out-of-process architecture for ReSharper and Rider by default in version 2026.2.1, reducing startup latency caused by Microsoft Defender scans. The blog details profiling data showing tens of seconds saved and links to a new diagnostic tool for reproducing the investigation. Developers can now upgrade to benefit from faster IDE launches.