FAQ - Troubleshooting

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====== FAQ - Troubleshooting - Frequent issues ======

The most frequent issues concerning our network are described here. If you have tried everything and still no dice, [[admin@sin.cvut.cz|write us a mail to admin (at) sin.cvut.cz]] or come see us in LAB during the office hours.


===== Wi-Fi =====

=== I cannot see Sincoolka network in the network list anymore. Why? ===
    * Can you see the network from your other devices? If not, please check https://status.sin.cvut.cz, as there may be a possible outage.
    * If you can see it on the other device, but not on the current, try turning Wi-Fi off and on again, or going to the corridor, where the signal is the strongest. Also check [[en:verejne:sit:wi-fi|the Wi-Fi page]] for walkthroughs for your devices.
    * The security settings might have changed, and your operating system hid our network as a consequence. Please, follow these steps:
      * Windows 7
        * The //Sincoolka// network should appear //at the very end of the networks list//, accompanied by a red cross. Click **Open Network and Sharing Center** link on the bottom of the window, then on **Manage wireless networks** and remove Sincoolka network from the list. Now, open the Wifi networks screen again; Sincoolka should be up and available for connection.
      * Windows 8, 8.1, 10
        * The //Sincoolka// network should appear //at the very end of the networks list//, accompanied by a white cross in red circle. Select it and click //Connect//, or //Delete// and then again //Connect//.
      * Linux
        * In case Network Manager is having issues with the network settings change, you'll need to //Edit connections// and either remove or change the network settings (see [[en:verejne:sit:wi-fi:linux|recommended settings for Network Manager]]).

=== After entering my credentials, a message appears: "Cannot log in to this network." ===
    * Check your school email and password //twice//. It is required to enter whole email address, //including domain//.
    * For Linux machines, you need the CA certificate for verification; download it at [[en:verejne:sit:cert|Certificates page]] (** AAA Certificate Services**, PEM format).
    * Try it again. It might not work the first time.

If you weren't able to solve your issue, please come to LAB during office hours.