Release failures can result from large files, conflicts with existing tags, or permission issues. Check file size, remove conflicting tags, and verify access rights.

When GitHub fails to create a release, there are several potential causes. Files that exceed GitHub's size limit (100 MB per file) may prevent successful release creation; consider using Git LFS for large files. Conflicting tags, especially if they preexist with the same name, can also cause errors. List tags with git tag and delete conflicts using git tag -d <tagname> before retrying. Ensure you have push and release permissions for the repository. Lastly, if the release process involves GitHub Actions, verify the workflow’s permissions and ensure necessary access scopes (like repo and workflow) are assigned to your token. Following these steps typically resolves issues, allowing the release to proceed as expected.