What happened#
The profile is outside its permitted validity period and cannot start the intended session.
What has not changed#
The local saved copy may still be present. Changing theme or Grandma Mode does not restore its validity.
What to do next#
Ask the person who operates your deployment for an appropriate newer signed profile. Preview it, compare the owner identity and confirm the replacement. Do not change the clock to work around expiry.
Before you continue#
Source and scope
Reviewed . The linked source describes the implementation; released-build evidence is a separate check.