Nano Banana Pro in Photoshop: "Could not complete your request because of a program error" – Works intermittently, very slow/fails most times
Hello
I've been using Generative Fill with Google Nano Banana Pro in Photoshop for photo editing, and it's been extremely unreliable today (February 17, 2026). Yesterday it worked fine, but now it's mostly failing.
I get the error: "Could not complete your request because of a program error" almost every time.
Out of ~50 attempts today, it succeeded only a few times (maybe 3–5), and even then it took much longer than usual to load/complete.
I've burned through around 2000 credits in the process (heavy retries).
Other models in the same dropdown (e.g., Flux, Kontext, or Firefly Pro) work normally and generate quickly/reliably.
In the standalone Firefly web app, Nano Banana Pro generations are also very slow (long progress bars), but they eventually complete after waiting a long time.
What I've already tried (no improvement):
Downgraded Photoshop from 27.3.1 to 27.3
Purged all caches (Edit > Purge > All,
Signed out/in of Creative Cloud.
Tested on different photos/prompts
This feels like a backend/server-side issue specific to Nano Banana Pro (perhaps throttling, quota weirdness after heavy use, or temporary degradation), since other models are unaffected and Firefly web shows similar slowness with it.
Has anyone else seen this spike in failures/slowdowns with Nano Banana Pro recently?
I would really appreciate some response/help.
Thank you
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