Intermittent Issue refreshing SQL data - error occurred during the pre-login handshake

[djdragius]

I have been refreshing data from our 2 SQL servers for months.  Recently, refreshes started to fail.  However, sometimes they still work after trying a few times.  It seems strange to me that it is happening on 2 different SQL servers.  I do not have SSL or any extra protection on the SQL servers that I am aware off I updated the on-prem gateway.  I have rebooted gateway server, sql servers. Here is the error -

Something went wrong

Cannot connect to the mashup data source. See error details for more information.
Please try again later or contact support. If you contact support, please provide these details.

Underlying error code-2147467259

Underlying error messageMicrosoft SQL: A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: SSL Provider, error: 0 - The wait operation timed out.)

DM_ErrorDetailNameCode_UnderlyingHResult-2147467259

Microsoft.Data.Mashup.ValueError.Class20

Microsoft.Data.Mashup.ValueError.DataSourceKindSQL

Microsoft.Data.Mashup.ValueError.DataSourcePathdtsvr\sqlhere;SAGECRM

Microsoft.Data.Mashup.ValueError.MessageA connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: SSL Provider, error: 0 - The wait operation timed out.)

Microsoft.Data.Mashup.ValueError.Number258

Microsoft.Data.Mashup.ValueError.ReasonDataSource.Error

Cluster URIWABI-US-NORTH-CENTRAL-redirect.analysis.windows.net

Activity ID24eb825e-5109-9f67-dd54-b16a7203b8ff

Request ID6481724f-010c-7959-316d-5ecf20b82235

Time2017-07-06 16:09:23Z

Thoughts on why this could have just quit working (although sometimes it DOES work)?  

[skocheta]

Hello, Were you able to resolve this. We are also intermittantly facing the same issue

[mehaksultana_20]

Hi Djdragius ,

Were you able to resolve this issue. I have encontered same error as of your. 

My report was perfectly fine intil this happened. 

So you help and guidence will be appreciated.

[mehaksultana_20]

Hi Djdragius ,

were you able to resolve this issue. I have encontered same error as of your. 

My report was perfectly fine intil this happened. 

So you help and guidence will be appreciated.

[Anonymous]

@djdragius,

Based on my research, the error could be caused by several things, such as .Net Framework, antivirus software and so on. Please perform the following steps and check if the error still occurs.

1. Uninstall .Net Framework and re-install it.
2. Run the following command.
    netsh winsock reset
3. Check if any antivirus software runs on your machine.

There are some similar threads for your reference.
https://stackoverflow.com/questions/15393398/net-4-5-forms-app-connecting-to-sql-server-2012-fails-s...
https://serverfault.com/questions/423013/sql-an-error-occurred-during-the-pre-login-handshake

Regards,