Windows users received an enhanced crash dialog to help Adobe diagnose and fix recurring stability issues. Known Issues and Rapid Follow-up
Adobe designated this as a "planned update" but urged immediate installation due to its security implications: Adobe Acrobat DC v21.001.20135
Released on February 9, 2021, was a critical planned update for the Continuous Track of the Adobe Document Cloud family. This version was primarily a security-focused release aimed at patching several high-severity vulnerabilities, including at least one (CVE-2021-21017) that had been exploited in the wild. Key Features and Improvements Windows users received an enhanced crash dialog to
The update introduced a modernized experience for editing and cropping PDFs, aimed at improving workflow efficiency. Key Features and Improvements The update introduced a
Shortly after its release, users reported specific bugs in v21.001.20135, such as persistent security warnings when opening sub-PDFs within "Contents" documents. Adobe quickly addressed these stability and functional issues by releasing a follow-up patch, , just days later on February 15, 2021. Bug version 21.001.20135 - Adobe Community
The heads-up display (HUD) was updated to auto-undock based on the size of the application window for better visibility.