Release Notes

○ Thin Print is removed.
○ Clear locally saved connections button is removed.
○ Character Set list is removed.
○ Touch Screen tab is removed from Peripherals window.
○ Peripherals > Serial
￭ Removed Serial touch screen settings.
￭ Removed the 1.5 radio button from Serial Port > Stop.
○ Remote Connection > Broker Setup > Select Broker Type
￭ Removed Dell vWorkspace, and Other.
￭ When Broker Type is selected as Citrix Virtual Apps and Desktops
- Removed Storefront style.
- Remove Account Self-service server.
- Removed Use default settings for XenApp and Xendesktop.
- Removed Visual Experience tab. Users must use Wyse Management Suite or Admin Policy Tool to switch
between Classic and Zero mode.
Important notes
● Not all resolutions in the resolution list in Display setup window are supported on different monitors. It depends on the
monitor and the client used.
● If there is no existing LPT printer configuration in the Admin Policy Tool when a USB printer is autodetected on the Printer
Setup window, the printer values such as printer name and identification displayed on the Printer Setup window are taken
from the printer that is plugged in. If there is an existing LPT printer configuration in the Admin Policy Tool, the printer
values displayed on the Printer Setup window are taken from the printer configuration in Admin Policy Tool.
● Dell Technologies recommends to not use the Enable 3440x1440 resolution function from the Admin Policy Tool on Wyse
3040 Thin Client unless the monitor that you are using has 3440x1440 as the best resolution. Using this resolution can have
some performance issues on Wyse 3040 Thin Client.
● Do not plug in and plug out video cables from the thin client frequently as it may cause unexpected graphics errors.
● After upgrading the client to ThinOS 9.1, the BIOS secure boot option is enabled by default if the BIOS password is set as
default or if the BIOS has no password. Disable the secure boot option before you downgrade the thin client to ThinOS 8.6
or 9.0 with a merlin image.
● You cannot boot into ThinOS 9.1 when you perform the following operations in BIOS setup:
○ Disable onboard Network Interface Card (NIC), Trusted Platform Module (TPM), or Platform Trust Technology (PTT).
○ Clear TPM or PTT.
● Downgrading ThinOS 9.1 to ThinOS 8.6 or ThinOS 9.0 using Wyse Management Suite is not supported.
● To downgrade ThinOS 9.1 to ThinOS 8.6 or ThinOS 9.0, you must clear TPM or PTT in BIOS first. Then use the Dell Wyse
USB Imaging Tool and Merlin images to downgrade.
● Refer Citrix multiple virtual channels section, before using Citrix multiple Unified Communication (UC) features.
● DHCP and DNS SRV configurations for Wyse Management Suite can only work after you reset your device to factory default
settings.
● If you publish WDA settings or Wyse Management Suite settings policies on the Wyse Management Suite server, ensure that
you specify the Group prefix, Group token field, and enable the Show Advanced Configuration option for providing the Wyse
Management Suite server details. If not specified, the Wyse Management Suite Group Registration Key is cleared and the
Wyse Management Suite server is changed to the default URL—https://us1.wysemanagementsuite.com—on the
client side.
● Citrix H.264-enhanced SuperCodec depends on Citrix binary to coordinate using software H.264 decoding or hardware
decoding. In ThinOS, there are no event logs to show SuperCodec status.
● Before using the Allow list under System setup > Admin policy tool > Advanced > Privacy&Security > Device
Security, you must do the following:
1. Select Allow from Device Security Type.
2. Click Add Row.
3. Add HID,Hub to the Class area.
4. Click the Save&Publish button. This function takes effect after you restart the client.
Without performing these steps, all USB devices including mouse and keyboard that you connect to the thin client remain
inaccessible.
● When using SCEP Administrator URL, you must use / at the end of the URL.
● Installing a Cisco_Jabber package could impact audio device settings on Unified communication package such as Cisco
Jabber, Zoom_Citrix, Cisco WebEx Meetings, or Cisco WebEx Teams in remote desktops. This impact is due to a Cisco
ThinOS 9.1.1131
101