---
title: No available organizations displayed when activating Coveo for Sitecore
slug: p9ca0203
canonical_url: https://docs.coveo.com/en/p9ca0203/
collection: coveo-for-sitecore-v5
source_format: adoc
---
# No available organizations displayed when activating Coveo for Sitecore
## Symptoms

When you try to activate Coveo for Sitecore, the **Existing** tab for [Coveo organization](https://docs.coveo.com/en/185/) selection is missing, even though the user who's logged in to the [Coveo Platform](https://docs.coveo.com/en/186/) is a member of the Administrators group in an existing [Coveo organization](https://docs.coveo.com/en/185/).

The [Sitecore logs](https://docs.coveo.com/en/2537#coveo-for-sitecore-log-viewer) show the following errors after login attempts:

```text
Exception System.InvalidOperationException: An error occurred when trying to create
a controller of type 'IndexesV1Controller'.
Make sure that the controller has a parameterless public constructor. --->
System.InvalidCastException: Invalid cast from 'System.String' to
'Coveo.Framework.Configuration.SecurityConfiguration'.

Exception System.ArgumentNullException: Precondition failed: The parameter
'm_CloudPlatformConfiguration' must not be null
Parameter name: m_CloudPlatformConfiguration
```

## Cause

Sitecore network requests are routed through a proxy that may be blocking communications with the [Coveo Platform](https://docs.coveo.com/en/186/).
As a result, the system cannot retrieve the list of available organizations.
To confirm that a proxy is affecting communication, [configure Sitecore to use a Fiddler](https://docs.coveo.com/en/2529/) to trace outbound traffic.

## Resolution

Update the proxy configuration to add [Coveo Platform IP addresses](https://docs.coveo.com/en/1831/) to the allowlist.
Alternatively, stop routing Sitecore network requests through the proxy by setting the `useDefaultWebProxy` attribute to `false` in your `<SITECORE_INSTANCE_ROOT>\Web.config` file.