ProRes videos render as black frames in Photoshop 2025/2026 on systems with Windows HVCI (Memory Integrity) enabled, while working correctly in Photoshop 2024 and other Adobe apps (PR/AE/ME) on the same system.

ProRes 422HQ and 4444/4444+ won’t playback, only show black, and cause extreme slowdown/lag in Photoshop 2025, and Photoshop 2026. Works great in Photoshop2024.

System Configuration (7970X - BROKEN):

• AMD Threadripper 7970X (32-core)
• Dual NVIDIA RTX 4090 GPUs
• Windows 11 Enterprise, Version 24H2 (Build 26100)
• HVCI/Memory Integrity: ENABLED (CredentialGuard, HypervisorEnforcedCodeIntegrity running)
• ASRock TRX50 WS motherboard, BIOS 14.10

System Configuration (3970X - WORKING):

• AMD Threadripper 3970X (32-core)
• Single NVIDIA RTX 4090 GPU
• Windows 11 Enterprise, Version 24H2 (Build 26100)
• HVCI/Memory Integrity: DISABLED
• Same NVIDIA drivers on both systems

Behavior:

• ProRes 4444+ and ProRes 422HQ files: Black frames in PS 2025 & 2026 on 7970X
• Same files work perfectly in PS 2024 on 7970X
• Same files work perfectly in PS 2025 & 2026 on 3970X (no HVCI)
• Same files work perfectly in Adobe Media Encoder on 7970X (with HVCI)
• MP4 files work fine in all versions on both systems
• Performance extremely sluggish when ProRes file is open in PS 2025/2026

Troubleshooting Attempted:

• Disabled GPU acceleration in Photoshop preferences - issue persists
• Reset Photoshop preferences - issue persists
• Fresh install of Photoshop 2026 - issue persists
• Updated motherboard BIOS - issue persists
• Tested with ProRes files from multiple sources (After Effects, Premiere Pro, Mac) - all show black