View Connection error when upgrading to Horizon 2406

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October 18, 2024

Last modified: 10/18/2024, 6:50 pm

Knowledge Base Article Advisory Troubleshooting Session Zero Clients

During the upgrade to Horizon 2406, some customers have reported connectivity issues with Tera2 PCoIP zero clients, which are unable to connect after the upgrade. The error message displayed is "View connection server error." While the initial TLS negotiation is successful, the renegotiation fails due to the requirement for TLS 1.2 and Extended Master Secret (EMS). We suspect this may be related to FIPS mode installations and the use of TLS 1.2, as we have not encountered this issue with TLS 1.3. Fortunately, a few customers have shared workarounds they discovered for this problem:

Append data to the following registry value on the upgraded connection servers:

Key: HKEY_LOCAL_MACHINE\SOFTWARE\VMware, Inc.\VMware VDM\Plugins\wsnm\TunnelService\Params
Name: JvmOptions
Value: "[existing value...] -Djdk.tls.useExtendedMasterSecret=false"

Restart the connection server service once the above has been applied.