Attach files to an exercise

You can attach files when the instructor has enabled uploads for that exercise.
The exercise selects one supported file type; the upload control shows which type
you can use. Preview mode does not accept learner uploads.

You can attach up to five files, with a combined maximum of 50 MB per message.
Each PDF, Word document, or text file can be up to 25 MB; each image can be up to
20 MB; a CSV file can be up to 50 MB. Lower limits may apply.

The server checks the actual file contents as well as the selected type and size.
Renaming a file does not change its format. Corrupt or mismatched files are rejected
before AI processing. These format checks are not an antivirus guarantee.

Only attach files that you have permission to share with the AI. Do not upload
passwords, private keys, or personal information that is unnecessary for the exercise.
Files are sent to the AI provider for your request; course history stores attachment
metadata rather than a public copy of the original file.

If a file is rejected, check its type, export a new copy from its original application,
reduce its size, or remove attachments until the combined size fits.