Acronis 2021 came with an integrated antivirus module. While a good idea in theory, early 2021 builds suffered from severe performance issues where the antivirus would flag the backup software’s own processes as suspicious, causing backups to stall or fail silently.
Patch B introduced refinements to:
Acronis True Image 2021 is a backup and cybersecurity solution that allows users to create full disk images, back up files, clone drives, and protect against ransomware. Build 39216 was one of the later updates in the 2021 lifecycle, which reached end of support on January 1, 2023 (Acronis now focuses on Acronis Cyber Protect Home Office).
Acronis True Image 2021 Build 39216 is the official version for , released on March 31, 2021
. This specific build marked a significant transition for the product, leaning heavily into integrated "Cyber Protection" by combining traditional disk imaging with active anti-malware and antivirus features. Acronis Forum Core Updates in Build 39216
This update was primarily focused on hardware compatibility and critical stability for both Windows and Mac platforms: Apple Silicon Support : Introduced full support for Mac computers with Security Protocol Enhancements
: Improved secure communication protocols with Acronis data centers to ensure backup integrity. Refined Backup Management acronis true image 2021 build 39216 patch b 2021
: Optimized management for users with multiple machines activated under a single license. Performance Fixes
: Resolved specific issues where the application could crash unexpectedly during high-intensity operations. Key Integrated Features
Build 39216 includes the standard suite of Acronis 2021 features designed for comprehensive data safety: Cyber Protection
: Real-time protection against ransomware and cryptojacking, alongside on-demand antivirus scans. Flexible Backups
: Supports full-image, incremental, and differential backups. It also introduced the
archive format, which allows for faster mounting and moving of backup files. Universal Restore Acronis 2021 came with an integrated antivirus module
: A tool that allows you to restore your entire system to a new computer with different hardware configurations. Resumable Replication
: If a backup to the Acronis Cloud is interrupted, it continues from the point of failure rather than starting over. User Feedback and Reported Issues Community discussions on the Acronis Forum
and other platforms highlighted several points of friction with this specific build: Performance Lag
: Some users reported that Build 39216 felt significantly slower than previous versions, often attributed to the high number of background processes (up to 12) required for the real-time security features. Hanging/Freezing
: A subset of users experienced "hangs" where the software would become unresponsive. In some cases, a manual clean-up of the installation folders and a complete re-install were required to restore functionality. Interface Complexity : While reviewers from
praised its power, they noted the UI could be unintuitive for new users due to the "sprawling system footprint". Core Isolation Conflict While Build 39216 was a stabilizing patch, it
: A driver associated with the "Try & Decide" tool has been known to prevent users from enabling Windows Core Isolation/Memory Integrity. Acronis Forum Technical Summary Release Date March 31, 2021 Build Number OS Compatibility Windows 10 (versions after 2018), macOS (Intel & M1) Primary Focus Security, Apple Silicon support, and stability Installation Note
Requires an active subscription or perpetual license for activation Note on "Patch B"
: While specific "Patch B" nomenclature is common in unofficial or third-party distribution circles, Acronis officially refers to this as
. Users are strongly encouraged to download the installer directly from their official Acronis account to ensure they are using a secure, verified version. using this specific build?
While Build 39216 was a stabilizing patch, it was not perfect. Community forums noted a few persistent issues that were carried over or introduced:
| Feature / Fix | Build 39161 (Initial) | Build 39216 (Pre-Patch) | Build 39216 Patch B | |---------------|----------------------|-------------------------|---------------------| | Windows 21H1 support | Buggy (BSOD risk) | Partial | Full | | Ransomware false positives | High | Medium | Very Low | | NVMe backup speed | ~150 MB/s | ~200 MB/s | ~280 MB/s | | Cloud sync stability | Unstable | Improved | Stable | | Security patches | Missing | Missing | Included | | VSS timeout errors | Frequent | Occasional | Rare |
As you can see, Patch B transforms Build 39216 into the most reliable version of Acronis True Image 2021.
Despite its stability, some users have reported isolated issues after applying Patch B. Here’s how to resolve them: