Not a long time when Windows 10 build 19559 came to Fast ring. Today, Microsoft has brought 20H1 update for Late Access Channel having a new known issue and security update. The build is pushed with cumulative updates on patch Tuesday taking the OS to 19041.21.
You can get KB4535550 automatically if you have opted for Slow ring in the Windows Insider Program Settings. Possible the testing of the new version is started through this update.
KB4535550 for Windows 10 Build 19041.84 Changelog
You know NVDA moreover Narrator users of Chromium version of Edge may encounter some trouble on the most recent update. This difficulty occurs when reading and going to certain content on the browser. Microsoft teams are aware of these issues in KB4535550. The issue will not affect the users of legacy Microsoft Edge. NVAccess has rolled out a beta of NVDA that fixes the known issue with the browser Edge. Additional information will be available in the In Process blog post that confirms more detail about the beta.
For more details about the resolved vulnerabilities, kindly navigate to the Security Update Guide.
Source – Windows Experience