ServiceNow exports failing due to incompatible TLS versions

Title

Symptoms:

When running a ServiceNow export from FNMS to ServiceNow, you may encounter one or more errors related to connection or secure channel errors such as:

ServiceNowConnectionTest.SendTestConnection: Error Checking Connetion to endpoint: api/x_fls_flexera_fnms/integration/fnmstosn
System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel.
   at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context)
   at System.Net.HttpWebRequest.GetRequestStream()
   at FNMP.ServiceNow.HTTP.ServiceNowRequest.WriteData(HttpWebRequest request, String content)
   at FNMP.ServiceNow.HTTP.ServiceNowRequest.Post(String content)
   at FNMP.ServiceNow.HTTP.ServiceNowConnectionTest.SendTestConnection()
[2019-09-08 03:01:50] - [DEBUG]: Exiting ServiceNowConnectionTest.SendTestConnection

Diagnosis:

This has been identified as related to the changes ServiceNow made to disable both both TLS 1.0 and TLS 1.1 [1]

This process appears to have been in an instance-by-instance basis so not all customers are experiencing this issue.

Solution:

See KB article Transport Layer Security (TLS) 1.1 & 1.2 Configuration

References:

https://hi.service-now.com/kb_view.do?sysparm_article=KB0746078

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FlexNet Manager Suite

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servicenow-exports-failing-due-to-incompatible-tls-versions

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Case id: 00001065