What does the Git error "remote: Repository not found." mean?

Question

After I issued

git push origin <branch-name>

and entered the access credentials, Git returned an error like so

remote: Repository not found.
fatal: Authentication failed for 'https://github.com/<account-name>/<repository-name>.git'

What seems to be the problem?

Answer 1

The GitHub help page, "Error: Repository not found" summarizes the possible causes:

• permission (which is what Monika refers to in the comments with "Cloned directly from repo…get error when pushing")

  You might need to fork the repo, and, on your local repo, do a:

  git remote rename origin upstream
  git remote add origin https://[email protected]/YourUsername/YourFork
  

• spelling: the name of the repo is case sensitive

• non-existent repo