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
DTOS10-12676	An unexpected RDP login prompt appears when another user attempts to access the same session.
DTOS10-13230	Precision 3280 with ThinOS 2505: Bloomberg keyboard not working after overnight idle at first login.
DTOS10-13261	Error encountered while authenticating in Horizon
DTOS10-13251	Horizon SAML login with MFA issues resolved.
DTOS10-14988	Floating bar does not hide in Citrix session.
DTOS10-12957	Venafi SCEP certificate request fails with undefined error.
DTOS10-12621	Captive portal authentication via browser not working.
DTOS10-15430	WMS check-in fails when Bluetooth is disabled on the device.
DTOS10-15440	Zebra printer compatibility issues resolved.
DTOS10-15335	Brightness shortcut keys (F6 and F7) not functioning on OptiPlex 7420 Client.
DTOS10-13004	Keyboard layouts for French (Belgian), French (Switzerland), and German (Switzerland) is not working.
DTOS10-15337 / CIPS-41371	ThinOS 10 supports NHS Smartcards and PIN bank cards.
DTOS10-15977	Automatically connect feature in Azure Virtual Desktop randomly connects to different desktops.
DTOS10-16009	Disable OneSign Wallpaper is missing in 3rd Party Authentication Settings option in WMS or APT > Group > Login Experiance > 3rd Party Authentication > Imprivata.

Security fixes

This release contains security updates as disclosed in the Dell Security Advisory DSA-2025-331. For more information, see DSA-2025-331: Security Update for Dell ThinOS for Multiple Vulnerabilities at Security Advisories, Notices and Resources.