KB4537806

• Updates an issue that prevents some applications from printing to network printers.

• Addresses an issue that might cause Microsoft browsers to bypass proxy servers.

• Addresses an issue that propagates shared folder permissions incorrectly to parent folders after an administrator makes changes on the host system to shared subfolders that are not in the Users directory.

• Addresses an issue in which re-running PowerShell workflows might fail with compilation errors for long sessions.

• Improves Event Forwarding scalability to ensure thread safety and increase resources.

• Addresses an issue that generates an “unknown username or bad password” error when attempting to sign in. This occurs in an environment that has a Windows Server 2003 domain controller (DC) and a Windows Server 2016 or later DC.

• Addresses an issue that causes Transport Layer Security (TLS) sessions to fail with the error, "The request was aborted: Could not create SSL/TLS secure Channel."

• Addresses an issue that prevents some applications from printing to network printers.

• Addresses an issue that prevents the Network Policy Server (NPS) accounting feature from functioning. This occurs when NPS is configured to use SQL for accounting with the new OLE (compound document) database driver (MSOLEDBSQL.dll) after switching to TLS 1.2.

• Addresses an issue that causes Security Assertion Markup Language (SAML) errors and loss of access to third-party apps for users who do not have multi-factor authentication (MFA) enabled.

• Addresses an issue that intermittently generates Online Certificate Status Protocol (OSCP) Responder audit events (5125) to indicate that a request was submitted to the OCSP Responder Service. However, there is no reference to the serial number or the domain name (DN) of the issuer of the request.

• Addresses an issue with the spell checker in RemoteApp. This issue prevents the spell checker from using the locale language the user selects when there is a mismatch between the locale setting and the keyboard layout of the local or client machine. For example, the issue occurs if using a Dutch locale language with the United States-International keyboard layout; the spell checker incorrectly uses the English language instead of the locale language (Dutch) configured in the OS.

• Addresses an issue with certificate validation that causes Internet Explorer mode in Microsoft Edge to fail.