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Exchange OnlineMicrosoft Configuration ManagerMicrosoft Entra IDMicrosoft IntuneWindows Server DNS ServerWindows UpdateWindows Update and Component-Based Servicing

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Microsoft

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DeploymentDirectory ServicesEmailEndpoint ManagementIdentity and accessWindows servicing

Tags

access deniedactive-directoryapp registrationapplication IDauthenticationCBScertificatecomponent storeConditional Accessconfiguration-managerDISMdnsexchange-onlineforwardingintuneip-helpermail-flowMFAmicrosoft-storendrnetworkOAuth 2.0OpenID Connectpermissionspxeregistryreplicationservice principalSFCsign-in logsSSOsystem-contexttenant IDTrustedInstalleruwpWindows Updatewindows-server

All cases (10)

DOCUMENTED GUIDE · NOT FIELD-TESTED

AADSTS50011: fix a Microsoft Entra redirect URI mismatch

Compare the redirect_uri in the failed sign-in request with the app registration, then correct the side that is wrong.

Microsoft · Microsoft Entra ID · Updated 2026-10-07DOCUMENTED GUIDE · NOT FIELD-TESTED

AADSTS50076: diagnose the Microsoft Entra MFA requirement

AADSTS50076 usually signals a required MFA step after a policy, account, or sign-in-context change; inspect the sign-in event.

Microsoft · Microsoft Entra ID · Updated 2026-10-07DOCUMENTED GUIDE · NOT FIELD-TESTED

AADSTS700016: application not found in the Microsoft Entra tenant

Trace AADSTS700016 to the client ID and tenant in the token request before changing app consent or registration.

Microsoft · Microsoft Entra ID · Updated 2026-10-07DOCUMENTED GUIDE · NOT FIELD-TESTED

Configuration Manager PXE certificate error 0x80092002

Investigate Configuration Manager PXE certificate encoding error 0x80092002 and the IssuingCertificateList registry value.

Microsoft · Microsoft Configuration Manager · Updated 2026-10-07DOCUMENTED GUIDE · NOT FIELD-TESTED

Configuration Manager PXE fails across a routed subnet

Troubleshoot Configuration Manager PXE clients on a remote VLAN with packet forwarding, DHCP, distribution point, and SMSPXE.log checks.

Microsoft · Microsoft Configuration Manager · Updated 2026-10-07DOCUMENTED GUIDE · NOT FIELD-TESTED

Exchange Online 550 5.7.520: automatic external forwarding is blocked

Diagnose Exchange Online NDR 550 5.7.520 when automatic forwarding to an external recipient is blocked by outbound spam policy.

Microsoft · Exchange Online · Updated 2026-10-07DOCUMENTED GUIDE · NOT FIELD-TESTED

Intune UWP app reports 0x87D1041C after System-context installation

Understand Intune error 0x87D1041C for a Microsoft Store UWP app already installed for a user when deployment runs in System context.

Microsoft · Microsoft Intune · Updated 2026-10-07DOCUMENTED GUIDE · NOT FIELD-TESTED

Windows DNS Server Event ID 4013 waits for Active Directory replication

Diagnose DNS Server Event ID 4013 by checking AD DS initial synchronization, replication, DC discovery, and DNS startup dependencies.

Microsoft · Windows Server DNS Server · Updated 2026-10-07DOCUMENTED GUIDE · NOT FIELD-TESTED

Windows Update 0x80070005: find what is denying access

Treat 0x80070005 as an access-denied symptom: identify the blocked file, registry key, policy, or security filter before repairing permissions.

Microsoft · Windows Update · Updated 2026-10-07DOCUMENTED GUIDE · NOT FIELD-TESTED

Windows Update 0x800f081f: repair a missing component-store source

0x800f081f means CBS could not find a repair source; run DISM, then SFC, and check source matching if repair still fails.

Microsoft · Windows Update and Component-Based Servicing · Updated 2026-10-07