In addition to the issues with Windows 7 boxes and the smart client for DT, I ran into another issue caused by this weekend’s update. The issue is related to TLS 1.2 which was implemented (Surprise!) over the weekend in the public cloud.
A DTSX that had been working for over a year stopped working. There were no changes on my end to cause this, and it coincided with all of the Windows 7 boxes failing to connect to the server after the recent update.
I could preview the OData data source successfully but could not run the package. This had been working for over a year before this update. I was getting this error message in Visual Studio when trying to run the package:
Error: 0xC020801F at Data Flow Task, OData Source : Cannot acquire a managed connection from the run-time connection manager. TLS 1.2
How I fixed this:
After a lot of searching, I added these registry keys to the Windows 10 system running the SSIS package.
- Enforce TLS 1.2 on your machine through registry settings. In an elevated command prompt run the following commands:
- reg add HKLM\SOFTWARE\Microsoft.NETFramework\v4.0.30319 /v SchUseStrongCrypto /t REG_DWORD /d 1 /reg:64
- reg add HKLM\SOFTWARE\Microsoft.NETFramework\v4.0.30319 /v SchUseStrongCrypto /t REG_DWORD /d 1 /reg:32
This is per here (buried in some bad HTML formatting) https://www.xszz.org/faq-6/question-2019082815664.html
Hope this saves someone else the hours I spent on this