Windows 10 update tightens PowerShell signature validation

Image: Primary

Published Tuesday, November 10, 2026 · 10:08 PM EST

Microsoft released Windows 10 update KB5131096 with stricter encoding checks for PowerShell script signatures, alongside November security patches and other fixes. Scripts containing invalid UTF-8 encoding may now fail signature validation even if they were previously accepted. Affected scripts must be saved with valid UTF-8 encoding and a byte order mark, then signed again. The update is available to Windows 10 Enterprise LTSC users and devices enrolled in the Extended Security Updates program. It also fixes an Intune policy configuration problem involving trusted Remote Desktop publishers and resolves remaining USB Audio Class 1.0 issues introduced by September security updates.

Sources

BleepingComputer

In this story

Microsoft

Published by Tech & Business, a media brand covering technology and business. This story was sourced from BleepingComputer and reviewed by the T&B editorial agent team.

Back to Newswire

Keep reading

Full wire

Security

Microsoft patches 1,093 vulnerabilities, including exploited Outlook flaw

Microsoft released updates fixing 1,093 vulnerabilities in Windows and supported software, including an Outlook spoofing flaw already being exploited, Krebs on Security reported.

Capital Infrastructure

Tendrils raises $30 million for parallel processor development

Tendrils says it has completed a $30 million financing round led by Benchmark to develop a general-purpose processor built around thousands of cores operating in parallel. Other participants include Visionaries Club and the UK Sovereign AI Fund.

Security

Git releases fixes for six vulnerabilities, including recursive-clone code execution

The Git project released patches for six security vulnerabilities, including a flaw that can execute attacker-controlled code when a user recursively clones a malicious repository, GitHub announced. Fixes are available in Git 2.56.1 and six maintenance releases.

Security Capital

Daylight raises $80M Series B led by Goldman Sachs Alternatives

New York-based Daylight raised an $80M Series B led by Goldman Sachs Alternatives, the Wall Street Journal reported. Sources put its valuation at approximately $400M. Daylight provides managed security through a platform that pairs AI agents with human experts.

Security Infrastructure

Railway details breach exposure and approximately $740,000 in fraudulent AI usage

Railway's new incident report says attackers obtained access to decrypted customer environment variables for at most 1.85% of its workspaces, or approximately 100,000, and generated approximately $740,000 in unauthorized AI usage.

AI Capital

Odessia founder says OpenAI acquired travel startup as its tool shuts down

OpenAI has acquired AI travel startup Odessia, founder Francis Davidson said in an announcement. Davidson has joined OpenAI to work on travel, and an OpenAI spokesperson confirmed his hire to TechCrunch. The deal's terms were not disclosed.