Dell ThinOS 10.x 2502, 2505, 2508, and 2511 Release Notes

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Known and fixed issues

The following table displays the known and fixed issues:

Table 1. Fixed issuesFixed issues
Issue ID	Description
DTOS10-17916	Smart card login to the broker logs an empty broker name instead of expected values like Citrix or Horizon.
DTOS10-17915	System language settings do not apply to certain new ThinOS 10.x 2511 configurations in APT.
DTOS10-17857	AVD configuration UI does not display correctly in WMS and APT.
DTOS10-17850	Disabling session reliability prevents session reconnection after network restore; the session remains disconnected.
DTOS10-17849	In Citrix Workspace mode, Reconnect button is enabled only if automatic reconnection is activated.
DTOS10-17848	In Citrix Workspace mode, Disconnect and Logoff buttons remain enabled unless a session is active.
DTOS10-17835	ThinOS login window overrides browser shortcuts.
DTOS10-17823	Imprivata OneSign wallpaper is replaced by WMS-uploaded image despite the OneSign wallpaper setting being enabled.
DTOS10-17811	Omnissa login inconsistently displays error messages for incorrect passwords.
DTOS10-17672	Zoom window stretches across both displays when an external monitor is connected during calls.
DTOS10-17654	Setting monitor 2 as primary and hot-plugging monitor 1 does not restore primary monitor setting.
DTOS10-17648	Philips SpeechMike is not redirected in AVD sessions.
DTOS10-17643	SpeechMike-III and USB disk devices cause wvd is unresponsive and stops responding in AVD.
DTOS10-17594	Unexpected system shutdown or reboot occurs when launching Mozilla Browser.
DTOS10-17591	Unable to upgrade U2724DE monitor firmware using peripheral firmware updates.
DTOS10-17579	Citrix native mode login prompts an extra window when selecting Sign in with another method.
DTOS10-17553	Jabra Evolve 30 II headset name is incorrectly displayed under playback devices.
DTOS10-17544	Browser sessions do not appear in Connection Manager after broker login.
DTOS10-17540	No shortcut key is available to open ThinOS local windows in classic mode.
DTOS10-17539	The preferences window should be disabled in Citrix Native Mode.
DTOS10-17538	Headset audio functionality is unclear in local, Omnissa, and Citrix VDI sessions.
DTOS10-17534	Event log shows empty brackets instead of Citrix entries after login timeout when launching apps or desktops.
DTOS10-17508	Speaker option missing from audio settings.
DTOS10-17507	Playback and recording device names are displayed incorrectly.
DTOS10-17486	USB device that is not detected after every reboot on Dell Pro 14 PC14250.
DTOS10-17483	Installation UI is skipped on the Dell Pro Tower QCT1250.
DTOS10-17303	HDMI or DisplayPort audio device name mismatch in Citrix session on Latitude 3420.
DTOS10-17299	Monitor audio does not work after client sleep and wake.
DTOS10-17287	VDI and browser access launch options and tooltips are not translated to the selected language.
DTOS10-17286	After using ThinOS 10.x 2511 ISO USB installation and factory reset, package install time or date is not displayed.
DTOS10-17213	Enabling a nondevice-specific package in the BIOS should not trigger a system restart.
DTOS10-17054	Jade client cannot enter sleep mode when connected using docking station.
DTOS10-17032	Changing a European language after time zone change does not properly apply the 24-hour format even with Auto-Timezone enabled.
DTOS10-17008	The notification Center model name does not match between event page and notification pop-up.
DTOS10-16997	Hot-plugged devices like Cherry KC 1000C keyboard and Nuance HID mouse are detected but not redirected in active sessions.
DTOS10-16973	Blur feature is not working in Microsoft Teams AVD broker after ThinOS 9.x to ThinOS 10.x code sync.
DTOS10-16789	Network Manager displays None when ENET0 is disconnected after dynamic assignment.
DTOS10-16778	Multi-broker configuration does not work with Horizon when set up with Citrix, Horizon, RDS, and Azure.
DTOS10-16483	Persistent Logs on Disk notification does not appear after enabling and setting a valid date.
DTOS10-16459	Device restarts when Enter, Tab, or Spacebar is pressed the Compatibility Tool page.
DTOS10-16457	After exiting Live Demo, Citrix Login and ThinOS Toolbar appear on the Compatibility Checker Tool.
DTOS10-16200	Monitor USB audio that is not listed in playback or recording devices after ThinOS 10.x imaging or factory reset.
DTOS10-15318	After converting from DHC to ThinOS 10.x, both WMS and MQTT statuses show as idle.
DTOS10-17903	The time that changed locally in ThinOS reverts to the previous time.

Security fixes

This release contains security updates as disclosed in the Dell Security Advisory DSA-2025-XXX. For more information, see DSA-2025-XXX: Security Update for Dell ThinOS for Multiple Vulnerabilities at Security Advisories, Notices and Resources.