As long the operating system is upgraded, all web based interfaces aren't reachable.
For observing the upgrade procedure you can open an SSH connection and check one of the following logs:
1. zypper.log (detailed)
→ shows all operating system related update information in real time
zypper.log
tail -F /var/log/zypper.log
2. cryptshare_launcher.log (summary)
→ collects and displays Cryptshare related distribution upgrade information
crypthsare_launcher.log
tail -F /opt/cryptshare-3/log/cryptshare_launcher.log