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Message: <blockquote data-quote="Uchiha_Nimnora" data-source="post: 31034317" data-attributes="member: 587294">Perfect — that makes your question about localhost and Windows 25H2 even more relevant <img class="smilie smilie--emoji" loading="lazy" alt="🔥" title="Fire    :fire:" src="https://cdn.jsdelivr.net/joypixels/assets/6.6/png/unicode/64/1f525.png" data-shortname=":fire:" />Since you’re in SOC, here’s the security-focused summary of 25H2’s effect on local environments and tooling:<hr /><h3><img class="smilie smilie--emoji" loading="lazy" alt="🛡️" title="Shield    :shield:" src="https://cdn.jsdelivr.net/joypixels/assets/6.6/png/unicode/64/1f6e1.png" data-shortname=":shield:" /> SOC & Security Tool Impacts in 25H2</h3><h4><img class="smilie smilie--emoji" loading="lazy" alt="✅" title="Check mark button    :white_check_mark:" src="https://cdn.jsdelivr.net/joypixels/assets/6.6/png/unicode/64/2705.png" data-shortname=":white_check_mark:" /> Good News</h4><ul> <li data-xf-list-type="ul">No localhost or loopback restrictions — tools like Burp Suite, Fiddler, Nessus, Wireshark, Splunk Forwarders, and local ELK stacks run normally.</li> <li data-xf-list-type="ul">Windows Defender for Endpoint now logs more telemetry natively (including deeper AMSI integration).</li> <li data-xf-list-type="ul">Sysmon, Event Viewer, and ETW sources remain unaffected.</li> <li data-xf-list-type="ul">PowerShell 7.5 preview compatibility improved — better logging for script block tracing.</li> </ul><hr /><h4><img class="smilie smilie--emoji" loading="lazy" alt="⚠️" title="Warning    :warning:" src="https://cdn.jsdelivr.net/joypixels/assets/6.6/png/unicode/64/26a0.png" data-shortname=":warning:" /> Potential SOC-Relevant Changes</h4><ol> <li data-xf-list-type="ol">Loopback isolation tightening for UWP and Store apps — may interfere with traffic capture (you may need to re-allow loopback with: CheckNetIsolation LoopbackExempt -a -n=<PackageFullName> ```) </li> <li data-xf-list-type="ol">SMB hardening updates — legacy SMBv1 shares might break. This affects some internal forensic tools or old malware test environments.</li> <li data-xf-list-type="ol">LSASS protection defaults→ enabled by default on new installs (Credential Guard ON).<ul> <li data-xf-list-type="ul">Great for security.</li> <li data-xf-list-type="ul">But you’ll need to disable it (via Group Policy or registry) if doing credential dumping analysis in isolated labs.</li> </ul></li> <li data-xf-list-type="ol">Enhanced driver blocklist (kernel) — can block custom packet capture drivers used by tools like Npcap or older Wiresharkbuilds.<ul> <li data-xf-list-type="ul">Fix: install the latest Npcap signed version.</li> </ul></li> <li data-xf-list-type="ol">Firewall resetcan remove custom inbound rules (for test servers, honeypots, etc.).<ul> <li data-xf-list-type="ul">Re-verify your inbound/outbound SOC lab rules after upgrade.</li> </ul></li> </ol><hr /><h3><img class="smilie smilie--emoji" loading="lazy" alt="⚠️" title="Warning    :warning:" src="https://cdn.jsdelivr.net/joypixels/assets/6.6/png/unicode/64/26a0.png" data-shortname=":warning:" /> Notable Known Issues</h3>Here are the primary ones reported so far:<ol> <li data-xf-list-type="ol">DRM / Protected Media Playback Problems Applications that use the “Enhanced Video Renderer” (EVR) with HDCP enforcement or other DRM-protected audio/video may see playback issues or failures (black screens, interruptions, errors) in 25H2. (<a href="https://www.windowscentral.com/microsoft/windows-11/microsoft-confirms-windows-11-version-25h2-issues-and-offers-potential-workarounds?utm_source=chatgpt.com" target="_blank">Windows Central</a>)<ul> <li data-xf-list-type="ul">This especially affects older Blu-ray/DVD apps or live TV recorders that rely on legacy rendering paths. (<a href="https://www.windowscentral.com/microsoft/windows-11/microsoft-confirms-windows-11-version-25h2-issues-and-offers-potential-workarounds?utm_source=chatgpt.com" target="_blank">Windows Central</a>)</li> <li data-xf-list-type="ul">Microsoft acknowledges it and says a fix is “in progress”. (<a href="https://www.windowscentral.com/microsoft/windows-11/microsoft-confirms-windows-11-version-25h2-issues-and-offers-potential-workarounds?utm_source=chatgpt.com" target="_blank">Windows Central</a>)</li> <li data-xf-list-type="ul">If you use such media apps, this could matter to you.</li> </ul></li> <li data-xf-list-type="ol">Updates via Standalone Installer (WUSA) Might Fail If you install a .msu update file (especially from a network share with multiple .msu files) using the Windows Update Standalone Installer (WUSA), you may encounter error codes such as ERROR_BAD_PATHNAME. (<a href="https://www.windowscentral.com/microsoft/windows-11/microsoft-confirms-windows-11-version-25h2-issues-and-offers-potential-workarounds?utm_source=chatgpt.com" target="_blank">Windows Central</a>)<ul> <li data-xf-list-type="ul">The workaround: copy the .msu file(s) to a local folder and run from there. (<a href="https://www.windowscentral.com/microsoft/windows-11/microsoft-confirms-windows-11-version-25h2-issues-and-offers-potential-workarounds?utm_source=chatgpt.com" target="_blank">Windows Central</a>)</li> <li data-xf-list-type="ul">Mostly affects enterprise/deployment scenarios; less likely to affect average home users.</li> </ul></li> <li data-xf-list-type="ol">SMB v1 File Sharing Broken / Impaired One of the issues listed is that file sharing over SMB v1 may not work correctly after 25H2. (<a href="https://www.windowslatest.com/2025/10/01/microsoft-confirms-four-issues-in-windows-11-25h2-but-theyre-not-a-dealbreaker/?utm_source=chatgpt.com" target="_blank">Windows Latest</a>)<ul> <li data-xf-list-type="ul">If you have legacy network shares using SMB v1 (older NAS devices, older Windows versions), this could disrupt them.</li> <li data-xf-list-type="ul">Note: SMB v1 is generally deprecated, but some environments still use it.</li> </ul></li> <li data-xf-list-type="ol">Performance Gains Are Minimal / Non-existent Some benchmarking shows that 25H2 offers essentially the same performance as 24H2 — no significant improvements. (<a href="https://www.techradar.com/computing/windows/windows-11-25h2-update-might-disappoint-if-you-were-hoping-for-better-performance-new-report-suggests?utm_source=chatgpt.com" target="_blank">TechRadar</a>)<ul> <li data-xf-list-type="ul">If you were hoping for a big speed boost or major feature jump, this might be disappointing.</li> <li data-xf-list-type="ul">For many users with already good setups, the upgrade may feel more like a “maintenance” update rather than a big leap.</li> </ul></li> <li data-xf-list-type="ol">Installation / Compatibility Blocks for Certain Hardware Although many blocks have been lifted, some devices with incompatible drivers (e.g., older Intel Smart Sound Technology drivers, certain webcams) had upgrade compatibility holds. (<a href="https://www.windowslatest.com/2025/10/02/microsoft-lifts-two-upgrade-blocks-allowing-windows-11-25h2-for-more-pcs/?utm_source=chatgpt.com" target="_blank">Windows Latest</a>)<ul> <li data-xf-list-type="ul">If your hardware is older or using niche drivers, there’s a possibility of unexpected issues.</li> <li data-xf-list-type="ul">Also: installing on unsupported hardware (i.e., bypassing checks) carries higher risk of instability. (<a href="https://techcommunity.microsoft.com/discussions/windows11/need-advice-to-install-windows-11-25h2-on-unsupported-pc/4430618?utm_source=chatgpt.com" target="_blank">TECHCOMMUNITY.MICROSOFT.COM</a>)</li> </ul></li> <li data-xf-list-type="ol">Increased Memory / Resource Usage (User Reports) There are user-forum reports (not always confirmed by Microsoft) suggesting that after upgrading to 25H2, RAM usage increased in some systems. (<a href="https://answers.microsoft.com/en-us/windows/forum/all/25h2-update-is-a-memory-hog/f2e23e87-757e-4cbd-8324-7eb813260c73?utm_source=chatgpt.com" target="_blank">Microsoft Q&A</a>)<ul> <li data-xf-list-type="ul">Example: “What I immediately noticed was my RAM usage went up ~2 GB” after upgrading.</li> <li data-xf-list-type="ul">These are anecdotal, so treat them with caution, but worth noting.</li> </ul></li> </ol></blockquote>

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