> For the complete documentation index, see [llms.txt](https://docs.soraco.co/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.soraco.co/docs/api-reference/.net-api/iqlmanalytics/methods/updatelastaccesseddate.md).

# UpdateLastAccessedDate

### Description

Updates the Last Accessed Date associated to a registered installation on the server.

Note that to call this function, you must initialize the QlmAnalytics object with the following properties:

* WebServiceUrl
* CommunicationEncryptionKey
* GUID (persistence key)

```csharp
bool UpdateLastAccessedDate(string installID)
```

### Parameters

| Parameter |  Type  | Description                                                              |
| --------- | :----: | ------------------------------------------------------------------------ |
| installID | string | unique identifier of this installation, returned by a call to AddInstall |

### Return

| Type    | Description                                             |
| ------- | ------------------------------------------------------- |
| Boolean | true if the operation was successful; otherwise, false. |