New Windows 11 issue, SSL/TLS handshake failure acknowledged by Microsoft

Microsoft has acknowledged one new Windows 11 issue in version 22H2. This new issue results in SSL/TLS handshake failure.

Microsoft has reportedly received reports about handshake failures in SSL (Secure Sockets Layer) and TLS (Transport Layer Security) connections. These issues have arisen about installing the update KB5018427.

SSL/TLS handshake might fail

Status	Originating update	History
Confirmed	OS Build 22621.674 KB5018427 2022-10-11	Last updated: 2022-10-17, 14:32 PT Opened: 2022-10-11, 19:31 PT

Microsoft has received reports that after installing KB5018427, some types of SSL (Secure Sockets Layer) and TLS (Transport Layer Security) connections might have handshake failures. Note for developers: Affected connections are likely to be sending multiple frames within a single input buffer, specifically one or more complete records with a partial record that is less than 5 bytes all sent in a single buffer. When this issue is encountered, your app will receive SEC_E_ILLEGAL_MESSAGE when the connection fails.

If you are experiencing issues, please use feedback hub to file a report following the below steps:

1. ​Launch Feedback Hub by opening the Start menu and typing “Feedback hub”, or pressing the Windows key + F
2. ​Fill in the “Summarize your feedback” and “Explain in more detail” boxes, then click Next.
3. ​Under the “Choose a category” section, ensure the “Problem” button, “Devices and Drivers” category, and “Print” subcategory are all selected. Click Next.
4. ​Under the “Find similar feedback” section, select the “Make new bug” radio button and click Next.
5. ​Under the “Add more details” section, supply any relevant detail (Note this is not critical to addressing your issue).
6. ​Expand the “Recreate my problem” box and press “Start recording”. Reproduce the issue on your device.
7. ​Press “Stop recording” once finished. Click the “Submit” button.

For additional information, see Send feedback to Microsoft with the Feedback Hub app.

Next steps: We are working on a resolution and estimate a solution will be available in late October.