If you have the Citrix Receiver/ICA client plugin installed for your web browser, try disabling it.

For Chrome Browsers:
1. Open a new tab and type chrome://plugins
2. Search for Citrix Receiver/ICA Client plugin
3. Disable the plugin and restart the browser.

In Firefox You can do this by:
1. Go to Tools->Add-ons
2. On the Add-ons page click on Plugins
3. Search for Citrix Receiver/ICA Client plugin
4. Disable the plugin and restart the browser.