# Printer retention

Printer redirection can be slow at times, which manifests itself in users waiting until printers are redirected on logon. To improve user experience, Parallels RAS 17 introduces a new feature where user printers are not deleted from a user session on user log off and can be reused in the future.

Take a note of the following when using this feature:

* On user logoff the printers are kept in registry, but user permissions are recalled.
* On user logon, the permissions are provided again, and printers become available immediately.
* Enabling this feature becomes especially beneficial if **Wait until all RAS Universal Printers are redirected before showing the application** option is required to be enabled in Publishing defaults.

To enable printer retention, in the RAS Console, select the **Universal printing** category and set the **Printer retention** option to "On".

<figure><img src="/files/OhFlnac3bxlT78r7GCoj" alt=""><figcaption></figcaption></figure>

## **Use case scenario**

45+ printers are defined on windows 10 and **Wait until all RAS Universal Printers are redirected before showing the application** option is enabled in Publishing defaults:

* Printer retention is set to "Off" — on every logon it takes 27 seconds from the moment the progress bar with printer redirection appears.
* Printer retention is set to "On"— only the first logon takes 27 seconds from the moment the progress bar with printer redirection appears. Every consequent logon takes less than 2 seconds from the moment the progress bar with printer redirection appears.

## **Parallels recommends**

Enabling the **Printer retention** option may greatly improve user experience, especially if the **Wait until all RAS Universal Printers are redirected before showing the application** option is enabled in Publishing defaults.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.parallels.com/landing/ras-universal-printing-best-practices/v19/parallels-ras-universal-printing-best-practices/printer-retention.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.