When Your Client Certificate Is About to Expire or Has Expired
When a client certificate has expired, users can no longer use Client Certificate Authentication to access cybozu.com.
If the client certificate is about to expire or has expired, ask your administrator to reissue a client certificate.
When the new client certificate is reissued, install it on your device.
Installing Client Certificates on Devices
Checking the Expiration Date of Client Certificate
You can check the expiration date of your client certificate on the "Mobile Access" tab under "Account Settings".
When the client certificate has expired, a message indicating the client certificate has expired is displayed.