RESOLVED: Advisory on February 2019 Security update for Windows 10 update 1809

Tara Overfield

Final Update 2/19/19 @1:30 PM (PST): This advisory is now resolved with no action needed from Microsoft Customers. The issue was not applicable to any valid or supported configuration. There is no consequence for .NET 4.8 Preview customers.

We strive to share timely information to protect our customer’s productivity, in this case, our finding was thankfully of no consequence for customers on supported configurations.

Update 2/15/19 @3:35 PM (PST): As we continue our investigation, we are finding the issue to be restricted to a limited and isolated set of test-only systems that are using non-official versions of the .NET 4.8 Preview. As of 2/15/19 around 12:00 pm (PST) we further tightened our delivery mechanisms to ensure that the February .NET security updates are only deployed to their expected target systems.

The February 2019 Security and Quality Rollup for Windows 10 update 1809 was released earlier this week. We have received multiple customer reports of issues when a customer has installed .NET Framework 4.8 Preview then installed the February security update, 4483452. These reports are specific to only to the scenario when a customer has installed both .NET Framework 4.8 Preview and the February security update.

We are actively working on investigating and addressing this issue. If you installed the February 2019 security update and have not seen any negative behavior, we recommend that you leave your system as-is but closely monitor it and ensure that you apply upcoming .NET Framework updates.

We will continue to update this post as we have new information.


We are working on guidance and will update this post and as we have new information.


There are no known workarounds at this time.


After installing .NET Framework 4.8 Preview then the February 2019 security update, 4483452, Visual Studios will crash with this error message:

“Exception has been thrown by the target of an invocation.”


Discussion is closed. Login to edit/delete existing comments.

  • Joy Das 0

    This piece of shit update fuqed up my whole system – my GPU doesn’t work properly anymore – Dont give me the crap “What are your specifications? Do you have all the latest updates?”
    Yes I have all of the updated drivers, and No – it isnt a problem with my Hardware coz Things were working PRETTY FINE till the update downloaded and fuqqed it up. “Having you check reinstalling the GPU Driver/ Have u checked whether ur GPU is set to Primary in the Nvidia settings” Done that didnt help.

    • Dan Shannon 0

      Just upgraded to a 2070 and the GPU seems to be under performing majorly – my specs are up to the correct standards and was wondering with the newest update have you lost a major amount of performance?

  • Paul Wagner 0

    Update automatically installed today on my DELL Latitude D630.  After that, I could not connect to the internet via either the ethernet connection or the wi-fi connection.  My desktop is not upgraded yet! and it was working fine.  Unintalled the upgrade, and lo-and-behold, my internet connection works via the wi-fi or ethernet!
    Update is crap…….

Feedback usabilla icon