Issue
WorkStation can't connect via secure communication (HTTPS) to EBO server, although it can connect via non-secure communication (HTTP). Cloud connectivity also fails. WebStation can still connect via HTTPS.
Product Line
EcoStruxure Building Operation
Environment
Building Operation Enterprise Server
Building Operation Enterprise Central
Building Operation WorkStation
Cause
TLS V1.3 is supported in Windows 11 and Windows Server 2022 or later. Enabling it in earlier Windows versions is not support it can lead to problems, as explained in Protocols in TLS/SSL (Schannel SSP) - Win32 apps | Microsoft Learn
Resolution
Do not enable TLS V1.3, If the installed Windows version doesn't support it (Windows 10 and Windows Server 2019 or earlier), or disable it if it is already enabled by following the below steps:
Open Windows Registry Editor, by writing "regedit" in Start menu.
Goto registry path "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Client"
Make sure that "Enabled" is set 0, and "DisabledByDefault" is set to 1, this will disable TLS V1.3 for clients.
Restart WorkStation.
For more information, refer to: Transport Layer Security (TLS) registry settings | Microsoft Learn
Warning! Improper use of regedit may damage PC’s operation.
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