# Training Problem **URL:** \ **Category:** Ultraltyics Platform\ **Tags:** question\ **Created:** [February 23, 2026, 4:05pm UTC](https://community.ultralytics.com/t/training-problem/1823 "2026-02-23T16:05:15Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Abir](https://avatars.discourse-cdn.com/v4/letter/a/59ef9b/32.png) [@Abir](https://community.ultralytics.com/u/Abir)\ **Post date:** [February 23, 2026, 4:05pm UTC](https://community.ultralytics.com/t/training-problem/1823/1 "2026-02-23T16:05:15Z")
Hello, I am trying to train my **YOLO11s** model for object detection using my imported dataset on the **Ultralytics platform** , but I keep receiving the same error message. Could someone please tell me how I can resolve this issue? ![Capture d'écran 2026-02-22 120825](https://us1.discourse-cdn.com/flex001/uploads/ultralytics1/original/2X/8/8cdbabb647eec0b21dd273a21fa5d80acf3bff71.png) ---
**Author:** ![Toxite](https://sea1.discourse-cdn.com/flex001/user_avatar/community.ultralytics.com/toxite/32/123_2.png) [@Toxite](https://community.ultralytics.com/u/Toxite)\ **Post date:** [February 23, 2026, 4:28pm UTC](https://community.ultralytics.com/t/training-problem/1823/2 "2026-02-23T16:28:14Z")
Can you provide your username? ---
**Author:** ![glenn-jocher](https://sea1.discourse-cdn.com/flex001/user_avatar/community.ultralytics.com/glenn-jocher/32/83_2.png) [@glenn-jocher](https://community.ultralytics.com/u/glenn-jocher)\ **Post date:** [February 23, 2026, 6:53pm UTC](https://community.ultralytics.com/t/training-problem/1823/3 "2026-02-23T18:53:23Z")
@Abir we fixed an issue around rate limiting today, I think your training should work now. Can you please try again? ---
**Author:** ![Abir](https://avatars.discourse-cdn.com/v4/letter/a/59ef9b/32.png) [@Abir](https://community.ultralytics.com/u/Abir)\ **Post date:** [February 24, 2026, 7:18am UTC](https://community.ultralytics.com/t/training-problem/1823/4 "2026-02-24T07:18:01Z")
Hello, thank you for your reply. I just tried again, but I still receive the same message. I think the issue may be related to my imported pretrained model. In fact, when I choose one of the models directly proposed by the platform, such as **YOLOv26s** , the training works correctly. I’m not sure whether it’s possible to select the **YOLOv11** version from the list of available models, because I only see YOLOv26 in the options. ---
**Author:** ![pderrenger](https://sea1.discourse-cdn.com/flex001/user_avatar/community.ultralytics.com/pderrenger/32/73_2.png) [@pderrenger](https://community.ultralytics.com/u/pderrenger)\ **Post date:** [February 25, 2026, 12:55am UTC](https://community.ultralytics.com/t/training-problem/1823/5 "2026-02-25T00:55:20Z")
Yes — **Ultralytics Platform** supports **Ultralytics YOLO11** training, but the base-model list you see depends on the project/architecture you’re currently in. If you’re inside a YOLO26 project you’ll only see YOLO26 models; switch/create a YOLO11 project and you should see the official YOLO11 `n/s/m/l/x` options as described in the Platform **[Models](https://docs.ultralytics.com/platform/train/models/)** docs. For the imported pretrained model: if training works with an official **YOLO26s** but fails only when you select your uploaded `.pt`, that strongly suggests the uploaded weights aren’t in a compatible Ultralytics checkpoint format (or they’re a different task like segment/pose/obb). Platform expects a native Ultralytics YOLO PyTorch `.pt` checkpoint (typically a `best.pt` from Ultralytics training), and task must match the dataset (task mismatches will fail, as noted in the Platform **[Cloud Training](https://docs.ultralytics.com/platform/train/cloud-training/)** docs). If you can share your Platform username (like we asked earlier) + the exact error text (copy/paste) and what created that pretrained file (Ultralytics version / which repo / which task), we can check the backend logs and tell you precisely why that `.pt` is being rejected. ---
**Author:** ![Toxite](https://sea1.discourse-cdn.com/flex001/user_avatar/community.ultralytics.com/toxite/32/123_2.png) [@Toxite](https://community.ultralytics.com/u/Toxite)\ **Post date:** [February 25, 2026, 12:31pm UTC](https://community.ultralytics.com/t/training-problem/1823/6 "2026-02-25T12:31:49Z")
Is it your own custom model? I tested uploading pretrained YOLO11s and training works fine. ---
**Author:** ![glenn-jocher](https://sea1.discourse-cdn.com/flex001/user_avatar/community.ultralytics.com/glenn-jocher/32/83_2.png) [@glenn-jocher](https://community.ultralytics.com/u/glenn-jocher)\ **Post date:** [March 1, 2026, 1:02pm UTC](https://community.ultralytics.com/t/training-problem/1823/7 "2026-03-01T13:02:18Z")
Maybe @Abir means that YOLO11 isn’t a default official model in the New Model dialog. @Abir yes I think I understand, the YOLO11 models are not shown in the official models section in the + New Model dialog. I’ll work on a fix for this today to make it easier to train from YOLO11. ---
**Author:** ![glenn-jocher](https://sea1.discourse-cdn.com/flex001/user_avatar/community.ultralytics.com/glenn-jocher/32/83_2.png) [@glenn-jocher](https://community.ultralytics.com/u/glenn-jocher)\ **Post date:** [March 1, 2026, 3:25pm UTC](https://community.ultralytics.com/t/training-problem/1823/8 "2026-03-01T15:25:17Z")
@Abir all set! You can now select YOLO11 models in the Train New Model dialog like this: ![Screenshot 2026-03-01 at 16.24.27](https://us1.discourse-cdn.com/flex001/uploads/ultralytics1/original/2X/9/979c52336e100e10e355f42bc24a4a8e2ec7dba9.jpeg)