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Exchange | Exchange Server | Management
The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.
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Hi @Pierre Desmidt,
Thank you for reaching out. To better understand the issue and help narrow down the cause, could you please provide a bit more information?
- Are you unable to access the Exchange Admin Center, your mailbox, or both?
- What happens when you try to sign in? Do you receive any error message or error code?
- Is this a Microsoft 365 cloud mailbox, Exchange Online, or an on-premises Exchange Server environment?
- Are you able to sign in to other Microsoft 365 services, such as the Microsoft 365 Admin Center?
- Do you still have Global Administrator or Exchange Administrator permissions assigned to your account?
- Does the issue affect only your account, or are other administrators experiencing the same problem?
- Have there been any recent changes to the account, such as a password reset, MFA changes, security policy updates, or license changes?
- If possible, could you provide a screenshot of the error message (please remove any personal or sensitive information before posting)?
The more details you can share, the easier it will be to identify the cause and suggest the appropriate troubleshooting steps.
If I have misunderstood any part of your situation, please feel free to clarify and I'll be happy to assist further. Thank you again for your time and understanding. I really appreciate your patience, and I’m here to help. Looking forward to your response.