This article is for G Suite Administrators. Teachers go here.
Errors might occur in Classroom when users—students or teachers—are on different domains.
Error messages
| Error message | Error occurs when | What to do |
|---|---|---|
| 1 user was not invited. You cannot invite students outside your domain to classes. | A teacher can't invite students in an untrusted domain to join a class. | Check your Classroom and Drive settings. See Whitelist a domain. |
| Oops! That code is for a class outside your domain. Please make sure you entered the correct code. | A student in an untrusted domain can’t use a code to join a class in the school domain. | Check your Classroom and Drive settings. See Whitelist a domain. |
| This file (These files) cannot be shared with the class due to a problem with your domain settings. Please contact your domain admin. | A teacher or student in an untrusted domain can’t post to the class stream. | Check your Drive settings. See Whitelist a domain. |
| This file (These files) cannot be turned in due to a problem with your domain settings. Please contact your domain admin. | A student in an untrusted domain can’t turn in files for an assignment. | Check your Drive settings. See Whitelist a domain. |
| This file (These files) cannot be unsubmitted due to a problem with your domain settings. Please contact your domain admin. | A student in an untrusted domain can't unsubmit previously submitted files for an assignment. | Check your Drive settings. See Whitelist a domain. |
| This submission (These submissions) cannot be returned due to a problem with your domain settings. Please contact your domain admin. | A teacher can't return files to a student in an untrusted domain. | Check your Drive settings. See Whitelist a domain. |