Premiere 26.5.2 (Build 5) repeatedly hangs when reopening an existing project on Windows

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Issue
Premiere 26.5.2 (Build 5 / executable 26.5.2.5) repeatedly becomes unresponsive on Windows while opening an existing editing project. The freeze prevents further editing.

Observed reproduction
1. Close the unresponsive Premiere instance.
2. Launch Premiere again. The Home screen opens normally.
3. Open the same saved project from Recent projects.
4. The project workspace partially appears, with blank/black panels and no usable timeline. Attempting to open the Window menu does not respond.
Expected: the project and timeline finish loading and menus remain responsive.
Actual: Premiere stalls again after restart. Windows previously displayed Not Responding.

Environment
Windows, OS version 10.0.26300 as recorded in Adobe logs.
NVIDIA GeForce RTX 4060 Ti; Windows driver version 32.0.16.1062.
Approximately 32 GB system RAM. During the hang Premiere used about 8 GB, with about 13 GB RAM still free. C: had about 261 GB free.
Project file approximately 1.2 MB, stored locally. A roughly 45-second vertical sequence uses .MTS footage across V1/V2, Lumetri corrections, position keyframes, an adjustment layer, a PNG overlay, and an ending Dip to Black. Sequence: 1080x1920, 23.976 fps, Rec.709. An H.264 export completed earlier, before the later freezes.

Diagnostic observations on 2 November 2026
Windows Application log recorded two previous Event ID 1002 hangs, with Event ID 1001 identifying AppHangB1 for Adobe Premiere Pro.exe 26.5.2.5. The current hung process was also reported as Responding=False.
No matching recent display-driver or disk warnings/errors were found in the limited System-log check. This does not rule out a driver issue.
Adobe UXP logs contained SAM initialization timeouts and Discover-panel initialization errors; these are observations, not a confirmed cause.
Desktop UI automation/accessibility tools were active during editing and diagnosis. Whether this contributes has not been isolated.

Troubleshooting completed
Closed and relaunched Premiere, then reopened the same saved project: the workspace stalled again.
Cache clearing, preference/workspace reset, a clean launch without automation, and comparison with an empty project have not yet been tested in this diagnostic session. No memory dump was captured.

Please investigate the repeated application hangs and advise which diagnostic traces or recovery steps would best distinguish project loading, workspace/UXP initialization, media decoding, or accessibility-related problems.

KatieToo

Community Manager

Hi @Mystic_Galaxyea5b

Thanks for stopping by the Premiere forums and giving us those details about your issue with Premiere v26.5.2 having some freezing/hangs in your project.

You mentioned a clean launch without automation in your troubleshooting. What sort of automations are you using with Premiere, I wonder if something there is interfering?

Also, if you could please let us know the following, this is also helpful to know:

Does it affect all projects or only some? What about new projects with a few sample clips?
Do you recall which Premiere this was last working in, when It started, and what might have changed? Any plugins, OS update, drivers, etc.

Screen Recording: If possible, include a recording of your screen showing the issue as that’s helpful. What’s happening when Premiere freezes? Is it just over one section of your edit or any other details you can provide?

Finally, we might like to request your project file with a sample of the media having this issue for testing on our side. I can DM you our private upload link for that. We may later use that same link to request a Dump file during Premiere freezing, as well.

Hope to help!
Katie

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