Intermittent Crashes on Windows Adobe Acrobat Freezing When Opening Large Files Issue: Adobe Acrobat may freeze or become unresponsive when trying to open or process large PDF files. Workaround: Increase your system's available memory by closing unnecessary applications. If Acrobat still freezes, try splitting the PDF into smaller sections using Acrobat’s Organize Pages tool. Disable Protected Mode under Edit > Preferences > Security (Enhanced), though be mindful that this reduces security(Adobe Help Center)