> ## Documentation Index
> Fetch the complete documentation index at: https://docs.goguardian.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Student Not Found

> Troubleshoot the 'Student Not Found' status on a student's tile in GoGuardian Teacher.

The "Student Not Found" status means the email address listed for the student does not have a record in GoGuardian. GoGuardian Teacher cannot connect to a student account it does not recognize.

## Cause 1: GoGuardian Extensions Are Not Installed

The student's account is new and the GoGuardian extensions have not yet been deployed to their managed school account.

**Fix:** Confirm that both GoGuardian extensions are installed on the student's Chromebook. Enter `chrome://extensions` in the address bar to check. If one or both extensions are missing, contact your IT administrator to verify the extension deployment. See the Verify Extension Deployment article for steps.

For students on Windows, macOS, or iPad devices, contact your IT department or GoGuardian administrator for device-specific deployment assistance.

<img src="https://mintcdn.com/goguardian/QLqvUOrqnV1EHHQZ/images/screenshots/student-not-found/step-01.png?fit=max&auto=format&n=QLqvUOrqnV1EHHQZ&q=85&s=ee4777b48a6704b94ef6a28fede33fff" alt="'Student not found' image displayed on a student's GoGuardian Teacher tile" width="259" height="188" data-path="images/screenshots/student-not-found/step-01.png" />

## Cause 2: The Rostered Email Address Has a Typo or Error

The student's email address in your class roster contains a typo, formatting issue, or incorrect domain.

**Fix:** Go to the **Students** tab in your classroom and check the spelling and formatting of the student's email address. If it is incorrect, remove the student from the roster and re-add them with the correct email address.

<Note>
  GoGuardian cannot be installed to Google alias addresses — only to a student's primary school-issued email address. Confirm you are using the student's assigned school email, not an alias.
</Note>

## Cause 3: The Student's Full Name Is Longer Than 20 Characters

If the student's full name (as registered in GoGuardian) exceeds 20 characters, GoGuardian Teacher may be unable to match the account.

**Fix:** Contact [GoGuardian Support](https://support.goguardian.com/s/contactsupport) for assistance resolving this.

## Resources

<CardGroup cols={2}>
  <Card title="Student Offline" href="/products/teacher/student-offline">
    Troubleshoot the "Student Offline" status.
  </Card>

  <Card title="Add Students to a Class" href="/products/teacher/add-students-to-a-class">
    Review how to add and manage students in a classroom.
  </Card>
</CardGroup>