Avast Cleanup Premium 21.4 Build 11223 May 2026

While Windows has a built-in Disk Cleanup, Avast’s version in 21.4.11223 goes deeper. It cleans:

Note for build 11223: Unlike later 22.x builds, this version does not forcibly remove browser login sessions by default—a user-friendly touch.

Version 21.4 Build 11223 is not merely a bug-fix release; it is a snapshot of Avast’s mature optimization philosophy. By this build, Avast had integrated years of user feedback, telemetry, and advancements in Windows kernel handling. Key highlights of this specific build include: Avast Cleanup Premium 21.4 Build 11223

This build is particularly noteworthy for its reduced false positives—fewer critical system files flagged for deletion—a common pain point in earlier cleanup utilities.

Ideal for:

Not ideal for:

The "Speed Up" tab houses two powerful tools: While Windows has a built-in Disk Cleanup, Avast’s

Startup Manager – Provides a clear, color-coded list of all applications that launch with Windows. Each entry shows:

Unlike Windows’ native Task Manager, Avast offers delayed start—a brilliant feature that staggers non-critical apps 30–60 seconds after login, reducing boot contention. Note for build 11223 : Unlike later 22

Background & Bloatware Manager – Scans for resource-heavy processes (high RAM/CPU/disk usage) and categorizes them as “Essential,” “Optional,” or “Bloatware.” It suggests disabling pre-installed manufacturer utilities (e.g., Dell SupportAssist remnants, HP JumpStart) that run invisibly.