14 DAY TRIAL // Microsoft has recently confirmed a new bug in most Windows versions after the release of this month’s Patch Tuesday update.
More specifically, the company says that TLS/SSL handshake might fail after installing the most recent security updates released in October.
Windows 11, including version 22H2, is also affected.
“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,” the company explains.
Microsoft says on the Windows Health dashboard that all Windows versions still getting updates today are impacted by the SSL and TLS problems.
The following operating systems are impacted, according to Microsoft, all after installing the most recent Windows updates that went live on Patch Tuesday:
- Client: Windows 11, version 22H2; Windows 11, version 21H2; Windows 10, version 21H2; Windows 10, version 21H1; Windows 10, version 20H2; Windows 10 Enterprise LTSC 2019; Windows 10 Enterprise LTSC 2016; Windows 10 Enterprise 2015 LTSB; Windows 8.1; Windows 7 SP1
- Server: Windows Server 2022; Windows Server 2019; Windows Server 2016; Windows Server 2012 R2; Windows Server 2012; Windows Server 2008 R2 SP1
Microsoft encourages users to send feedback in order to help figure out what goes wrong and therefore develop a fix in a timely manner. The company says it’s already working on a fix, and right now, it expects the release to take place later this month, but a specific ETA is yet to be announced.