Qlik Rest Connector cannot make connection from Windows server 2016

Sonja_Bauernfeind — Wed, 24 Aug 2022 14:09:03 GMT

A REST data source connection fails when using the Qlik REST Connector from Windows Server 2016.

The error displayed is:

Connection failed: Failed to connect to server

The same connection works from other REST client e.g. Postman.

Environment:

By default in the Windows Server 2016, only the Message Authentication SHA256 is enable and SHA is disabled. The REST connector is using "stunnel", which is the SSL/TLS tunneling framework available from Windows.

But if the REST data service provides the Cipher suites based on TLS 1.0/1.1, which does not support SHA256, the connection is failed.

Resolution:

The issue can be solved by enabling HKEY_LOCAL_MACHINE>>SYSTEM>>CurrentControlSet>>Control>>SecurityProviders>>SCHANNEL>>HASHES>>SHA in the registry.

Value Name	Enabled
Value Type	REG_DWORD
Enabled Value	4294967295
Disabled Value	0

article Qlik Rest Connector cannot make connection from Windows server 2016 in Official Support Articles

Qlik Rest Connector cannot make connection from Windows server 2016

Environment:

Resolution: