Error: Connector connect error: Invalid custom connector

[abi_qliksupport]

We have recently upgraded to May 2023 Patch 4 version. After upgrade some of the tasks are failing with the below mentioned error but the connections refreshes are successful if we run locally.

20240303T003017.030+0000 0002 LIB CONNECT TO 'xxxx'
20240303T003019.147+0000 Error: Connector connect error: Invalid custom connector -
20240303T003019.147+0000 Used QVConnect: C:\Program Files\Qlik\Sense\Engine\QvConnect64.EXE
20240303T003019.149+0000 Execution Failed
20240303T003019.159+0000 Execution finished.

[Rohit-Prakash]

@abi_qliksupport The error is related to TLS, and this is mostly related to the error you see during the task load. The correct TLS version and ciphers need to be enabled on the QlikSense servers.

Please follow the steps from the below articles and either run the script manually or use the powershell script to enable necessary TLS and ciphers for QlikSense. This should be performed on both Central and RIM nodes.

https://community.qlik.com/t5/Official-Support-Articles/TLS-and-SSL-Support-in-Qlik-Sense-How-to-con...