# Fleet 4.18.0 | Better security and user messaging in Fleet Desktop
Fleet 4.18.0 is up and running. Check out the full [changelog](https://github.com/fleetdm/fleet/releases/tag/fleet-v4.18.0) or continue reading to get the highlights.
For update instructions, see our [upgrade guide](https://fleetdm.com/docs/deploying/upgrading-fleet) in the Fleet docs.
## Highlights
- Enjoy improved security for Fleet Desktop.
- Show your end users a call to action in Fleet desktop for failing policies.
## Improved security for Fleet Desktop
**Available in Fleet Free and Fleet Premium**
Fleet Desktop uses a random UUID to authenticate to the Fleet server. While it's extremely unlikely to fall victim to a brute-force attack, it's always better to be safe than sorry. In order to combat that possibility, we've added rate limiting for all device authorized endpoints.
## Show your end users a call to action in Fleet Desktop for failing policies
**Available in Fleet Free & Fleet Premium**
The main goal of Fleet Desktop is to empower end users to take charge of managing the security of their enrolled device. If a device is failing a policy check, Fleet Desktop will now show end users useful information for resolving the issue and make it easy to check if they've fixed it.
## More new features, improvements, and bug fixes
In 4.18.0, we also:
* Improved styling for tooltips, dropdowns, copied text, checkboxes and buttons.
* Fixed a bug present when converting a user to SSO login.
* Fixed a bug causing the edit user modal to hang after editing one user.
* Fixed a bug in the FleetUI causing text to be truncated in tables.
* Fixed a bug affecting software vulnerabilities count in Host Details.
* Fixed Select Targets search box and updated to reflect currently supported search values: hostname, UUID, serial number, or IPv4.
* Improved disk space reporting in Host Details.
* Updated frequency formating for Packs to match Schedules.
* Fixed a bug causing only one line to be exported from live query results.
* Replaced `hosts` count with `results` count for live queries.
* Replaced "Uptime" with "Last restarted" column in Host Details.
* Removed vulnerabilities that do not correspond to a CVE in Fleet UI and API
* Added standard password requirements when users are created by an admin.
* Updated the regexp we use for detecting the major/minor version on OS platforms.
* Improved calculation of battery health based on cycle count. “Normal” corresponds to cycle count < 1000 and “Replacement recommended”
corresponds to cycle count >= 1000.
* Fixed an issue with double quotes usage in SQL query, caused by enabling `ANSI_QUOTES` in MySQL.
### Ready to update?
Visit our [Update guide](https://fleetdm.com/docs/deploying/upgrading-fleet) in the Fleet docs for instructions on updating to Fleet 4.18.0.