PowerShell 7.7.0 Preview 5 was released on September 23, 2026, introducing a new switch, $PSStyle.AutoSizeDefaultFormatting, aimed at producing compact output for AI agents and narrow terminal windows. This version also improves startup reliability by allowing the per-user configuration file to fail open instead of crashing PowerShell, addressing common issues for cloud-synced users. Additionally, it includes several smaller fixes and improvements, such as enhancing remote credential prompts and streamlining tooling processes. The preview marks the transition to .NET SDK 11.0.100-rc.1, aligning PowerShell with the latest .NET ecosystem standards
PowerShell 7.7.0 Preview 5 Ships With Agent-Friendly Output and Better Startup Config
PowerShell 7.7.0-preview.5 went live on September 23, 2026, marking the fifth preview in the 7.7 development line that opened on April 28. Its headline feature is a new $PSStyle.AutoSizeDefaultFormatting switch that forces compact, Auto-sized output for table and wide views, making the shell behave more cleanly when driven by AI agents or run inside narrow terminal windows. A second notable change makes the per-user powershell.config.json fail open rather than crash PowerShell at startup, removing a common OneDrive-sync failure while still keeping the system-wide config file fail-closed for security.
