# Remove third-party private extensions from your account
<a name="registry-private-deregister-extension"></a>

To remove a third-party private extension or extension version, use the [https://docs.aws.amazon.com/cli/latest/reference/cloudformation/deregister-type.html](https://docs.aws.amazon.com/cli/latest/reference/cloudformation/deregister-type.html) command.

You can deregister a specific extension version, or the extension as a whole. To deregister an extension, you must individually deregister all registered versions of that extension. If an extension has only a single registered version, deregistering that version results in the extension itself being deregistered. You can't deregister the default version of an extension, unless it's the only registered version of that extension, in which case the extension itself is deregistered as well. 

**Warning**  
Deregistering a private extension can't be undone. This action will:  
Make the extension unusable in all CloudFormation operations.
Cause failures in future stack updates that use this extension (for modules and resource types). Although you can reregister the extension privately later, this could cause failures if CloudFormation relies on an earlier version.
Before proceeding, use the [list-stacks](https://docs.aws.amazon.com/cli/latest/reference/cloudformation/list-stacks.html) and [get-template](https://docs.aws.amazon.com/cli/latest/reference/cloudformation/get-template.html) commands to verify that no active stacks are using this extension.

## Example deregister extension commands
<a name="registry-deregister-type-commands"></a>

This section provides examples that show the different ways to deregister private extensions.

**Deregister by type name**  
Use the [https://docs.aws.amazon.com/cli/latest/reference/cloudformation/deregister-type.html](https://docs.aws.amazon.com/cli/latest/reference/cloudformation/deregister-type.html) command with `--type` and `--type-name` options to deregister your extension.

```
aws cloudformation deregister-type \
  --type MODULE \
  --type-name My::S3::SampleBucket::MODULE
```

**Deregister by type name and version**  
To deregister a specific version of your extension, specify the `--version-id` option in the command.

```
aws cloudformation deregister-type \
  --type MODULE \
  --type-name My::S3::SampleBucket::MODULE \
  --version-id 00000001
```

**Tip**  
To set a different version of the extension as default first, use the [set-type-default-version](https://docs.aws.amazon.com/cli/latest/reference/cloudformation/set-type-default-version.html) command.

**Deregister by ARN**  
Use the `--arn` option and specify your extension's ARN to deregister it.

```
aws cloudformation deregister-type \
  --arn arn:aws:cloudformation:us-west-2:123456789012:type/resource/Organization-Service-Resource
```