# Validate Disable and replace TLS 1.0 in ADFS with AD/DNS evidence > Use Disable and replace TLS 1.0 in ADFS to review this narrow operational decision without extending the source beyond its stated scope. - Canonical URL: https://update.dsesecurity.com/updates/validate-disable-and-replace-tls-1-0-in-adfs-with-ad-dns-evidence/ - Publisher: Detection Systems & Engineering (DSE Security) - Author: DSE Security Editorial Team - Published: 2026-08-27T17:02:04+00:00 - Modified: 2026-08-27T17:29:40+00:00 - Last reviewed by DSE: 2026-08-27 - Resource type: Checklist - DSE priority: Advisory - Topics: Cybersecurity, Microsoft 365 & Identity, Networks & Infrastructure - Reading time: 3 minutes ## What you need to know Use Disable and replace TLS 1.0 in ADFS to review this narrow operational decision without extending the source beyond its stated scope. ## Potentially affected Teams, systems, services, or facilities within the stated scope of Disable and replace TLS 1.0 in ADFS ## DSE recommendation Compare the observed state with the cited official source, document applicability and exceptions, and test any approved change with rollback safeguards. ## Article Treat this document as a focused evidence review: Validate Disable and replace TLS 1.0 in ADFS with AD/DNS evidence. Only the official source and traced locations below supply facts. Confirm applicability before acting. ## Source fact: The official [Disable and replace TLS 1.0 in ADFS](https://learn.microsoft.com/en-us/troubleshoot/windows-server/active-directory/disable-and-replace-tls-1dot0) from Microsoft supports the following bounded statements: - At Introduction below H1, Microsoft states: “This article provides guidance and considerations for disabling and replacing TLS 1.0 in Active Directory Federation Services (AD FS).” The research record locates this support at Introduction below H1. - At Summary, Microsoft states: “Many customers are considering the option to disable TLS 1.0 and RC4 protocol in AD FS, and replace it with TLS 1.1 or a later version.” The research record locates this support at Summary. Do not import neighboring assumptions into the source record. The supported task is a scoped comparison involving Active Directory objects, search bases, domain controllers, delegated roles, cmdlet parameters, and the DNS paths used to locate directory services and the conditions the source actually describes. ## What the source does not establish The cited page and retained statements do not establish the current state of any DSE or customer environment, prove that the documented configuration is applicable, or authorize a production change. Confirm supported versions, dependencies, and the current live source before use. The citation is not a substitute for observed state, authorization, compliance evidence, or dependency health. Examine Active Directory replication, Windows DNS, domain-controller location, time, network reachability, privileges, and protected credentials before translating the source into an operational decision. ## Applicability questions - For source statement 1 at Introduction below H1, which observable configuration, record, or test can confirm applicability here? - For source statement 2 at Summary, which observable configuration, record, or test can confirm applicability here? - Which deployed instance of Active Directory objects, search bases, domain controllers, delegated roles, cmdlet parameters, and the DNS paths used to locate directory services will be compared with the source, and why that instance? - How will the review distinguish a source mismatch from a failure in Active Directory replication, Windows DNS, domain-controller location, time, network reachability, privileges, and protected credentials? - Who approves the conclusion, exception, test window, and rollback threshold? ## DSE recommendation: DSE recommends using the cited source as the evidence anchor for this decision. Use a two-person review for the source interpretation and the resulting operational decision. Record the source location, examined part of Active Directory objects, search bases, domain controllers, delegated roles, cmdlet parameters, and the DNS paths used to locate directory services, observed and expected states, owner, and reason for deviation. Do not move from citation to production in one step. Pilot the decision where practical, observe agreed signals, retain a reversal point, and verify Active Directory replication, Windows DNS, domain-controller location, time, network reachability, privileges, and protected credentials. Handle credentials, keys, recovery data, and personal information through approved secure channels. ## Verification and evidence Build a reproducible chain from Introduction below H1; Summary to the observed environment. Useful domain evidence includes sanitized command transcripts, parameter records, directory exports, authorization records, DNS locator tests, and before-and-after state; label every item with scope, timestamp, collector, and stable identifier. Label this evidence set DSE-20260827-322 so observations, approvals, exceptions, and later rechecks cannot be substituted from another source review. Record the decision even when no change is made, including uncertainty and the next trigger. Use safe testing conditions for disruptive work, preserve rollback proof, and revisit the conclusion after relevant platform, dependency, vendor, or ownership changes. ## Official references - [Disable and replace TLS 1.0 in ADFS](https://learn.microsoft.com/en-us/troubleshoot/windows-server/active-directory/disable-and-replace-tls-1dot0) — Microsoft ## Primary reference - Name: Disable and replace TLS 1.0 in ADFS - Authority: Microsoft Learn - URL: https://learn.microsoft.com/en-us/troubleshoot/windows-server/active-directory/disable-and-replace-tls-1dot0 - Source publication date: Not stated by the source ## Citation and use Preferred citation: “Validate Disable and replace TLS 1.0 in ADFS with AD/DNS evidence,” DSE Security, https://update.dsesecurity.com/updates/validate-disable-and-replace-tls-1-0-in-adfs-with-ad-dns-evidence/ Publishing principles: https://update.dsesecurity.com/updates/dse-updates-editorial-methodology/ Usage and citation policy: https://update.dsesecurity.com/usage/ Copyright © 2026 Detection Systems & Engineering. 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