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# VNC Viewer (RealVNC) closes after connecting to VNC server

> Fix RealVNC Viewer closing immediately after connecting because pal8 ColorLevel is unsupported. Adjust ColorLevel settings to restore VNC connectivity.

## Fix for RealVNC closing connection after connection

VNC Viewer from RealVNC uses "ColorLevel" pal8, which is not supported by most VNC servers.

Please follow these steps in order to connect successfully:

<Steps>
  <Step title="Open the RealVNC options menu" />

  <Step title="Click &#x22;Advanced Options&#x22; near the bottom left corner of your app." />

  <Step title="Click on &#x22;Expert&#x22; tab and change &#x22;ColorLevel&#x22; value from its default setting to full, rgb332 or rgb565" />
</Steps>

You should be able to successfully connect now.