Entra Sync with On prem mismatch user ids and emails

@billybryan98

Hello there, I hope you are well. I’m an Azure/Identity specialist with extensive hands-on work migrating and synchronizing on‑prem AD with Entra/AAD Connect and Exchange Online. I’ve fixed duplicate IDs, merged multiple emails under one identity, and standardized ID formats and mailbox associations in hybrid environments. In past projects I’ve used Azure AD Connect, Exchange Online, AD tools, and PowerShell to clean up user identities, align permissions, and ensure correct email mappings without disrupting mail flow. I can handle your Entra Sync issues by auditing your on‑prem and cloud config, implementing a staged cleanup, validating with test users, and delivering a consistent identity model with reliable access controls. Please contact me to discuss details. I’m excited to help you resolve this efficiently. Best regards, Billy Bryan

@jagratip3

We have an on-premises local domain with emails hosted in Exchange Online, and after completing Entra Sync, several issues have arisen that need immediate attention: Duplicate IDs: Identify and clean up or merge duplicate accounts to prevent conflicts. Multiple Email Associations: Some user IDs are linked to multiple email addresses; these need correction so each ID is properly associated with its intended mailbox. Standardized ID Format: Implement a consistent format for all user IDs across the environment. Permissions & Access: Review and fix email access, roles, and permissions to align with the standardized IDs and ensure users have correct access. The objective is to clean, standardize, and synchronize all user accounts, ensure correct mailbox associations, and maintain proper permissions. Deliverables should include a documented cleanup plan, verification of email and access alignment, and steps to prevent future conflicts. We are seeking an experienced Microsoft 365/Exchange/Entra identity administrator who can efficiently resolve these issues, enforce a standardized ID system, and ensure a fully operational, synchronized environment.

@amadorjay

Hello, I will resolve your Entra sync issues, focusing on duplicate ID cleanup and email associations. The root cause likely stems from inconsistent ID formats and permissions. I have worked on similar systems, integrating on-prem domains with Exchange Online, ensuring seamless access management. Solution Approach: - Conduct a thorough audit of current IDs and email associations. - Implement a standardized ID format across the system. - Merge duplicate IDs with careful data validation. - Redefine access permissions based on the new structure. - Ensure compliance with security protocols throughout the process. - Utilize a robust logging mechanism for tracking changes. - Deploy using a phased approach to minimize downtime. Questions: What is the expected volume of users and emails affected? Are there specific compliance requirements I should consider? How do you currently manage access permissions for different roles? I am ready to start immediately and ensure a smooth resolution to your challenges.

@itsMikey009

Summary of Proposal: Service: Active Directory & Exchange Online Identity Cleanup After Entra Sync Problems to Fix: Duplicate user IDs - cleanup and merge One ID linked to multiple emails - consolidate Non-standardized ID formats - normalize naming convention Broken email permissions and associations - repair Solution Process: Audit all AD and Exchange Online accounts to identify issues Merge/remove duplicate accounts safely Standardize user ID format (UPN, SamAccountName) Fix email-to-ID associations (one-to-one mapping) Repair mailbox permissions (Send As, Full Access, delegates) Force Entra Sync to update Azure AD Deliverables: Clean, standardized user directory Proper one-to-one ID-to-email mapping Correct permission assignments Complete change log and documentation Tools: PowerShell, Azure AD, Exchange Online Management, Entra Connect Timeline: 6-7 days Experience: 4.5 years with Microsoft 365, Active Directory, and Azure identity management Availability: Can start immediately

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@Mrtua

Hello, I have extensive experience with Microsoft 365 security architecture including Entra ID, Conditional Access, Defender and Purview. I can configure your tenant based on Microsoft security best practices and deliver a hardened environment from day one. I can start immediately. Best regards