# Connection drops after a successful authentication

In some cases, the session may disconnect immediately after authentication or a few seconds later.

One possible cause is how the SSH server handles OS detection or shell history fetching for terminal autocomplete.

Some Termius features use SSH `exec` channels by running commands right after the connection is established. You can confirm this in the connection log by looking for the `⚙️ Executing command` entry near the end.

If that is the cause, disable the features that rely on SSH `exec` channels.

{% tabs %}
{% tab title="Desktop" %}
Open **Termius** → **Settings** → **Terminal** and disable:

* Autocomplete
* Import shell history
* Detect OS
  {% endtab %}

{% tab title="Mobile" %}
Open **Termius** → **Profile** → **Settings** and disable:

* Import command history
* Detect Host Operating System
  {% endtab %}
  {% endtabs %}


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