Microsoft Sign In Loop
I am trying to sing into Microsoft 365, but every time I do, it takes me back to the login screen. I sing in with my outlook account, but I can't reach the applications. I can sign in on the browser, but not the applications on my computer. I have tried uninstalling and reinstalling M365, but the issue still persists
M365 Admin Center Global Administrator Lockout
Hello Microsoft Community, I am seeking urgent assistance and guidance regarding a critical Microsoft 365 tenant lockout that has been ongoing for several days without a resolution or proper communication from the support team. Our organization manages Microsoft 365 services for a business with more than 200 active users who depend on Microsoft 365 for their daily operations. Issue Description We have been locked out of our Microsoft 365 tenant's administrator account. This prevents us from properly managing our Microsoft 365 environment and restoring normal access to essential business services. Our business-critical data, including important documents and operational information, is stored in SharePoint. The inability to access and manage these services has significantly disrupted our business operations. Microsoft Support Ticket References We have raised multiple support tickets and followed up repeatedly, but the issue remains unresolved. Tracking ID: 2610050040001149 Tracking ID: 2610090010001066 Tracking ID: 2610050040001222 Despite these support cases and repeated follow-ups, we have not received a satisfactory resolution or a clear recovery timeline. Support Experience So Far Following a discussion with the support team, we were expecting a call to assist with unlocking the administrator account and providing a temporary password through the appropriate recovery process. However, we have not received the expected call or a meaningful update. Our main concerns are: Complete loss of access to the Microsoft 365 tenant administrator account. More than 200 users affected by the ongoing incident. Critical business data and documents stored in SharePoint. Multiple support tickets without a concrete resolution. Lack of clear communication regarding the root cause and recovery timeline. No clear escalation path or confirmation of the next recovery steps. Our Concerns We understand that technical issues can occur, but leaving a business-critical environment inaccessible for an extended period without meaningful updates is extremely concerning. We purchase Microsoft 365 licenses through a partner and expect appropriate technical support and escalation assistance when critical incidents occur. Our organization previously used Google Workspace and recommended migrating to Microsoft 365 because of its enterprise capabilities. This incident has seriously affected user confidence and business continuity. If access cannot be restored promptly, we may have to consider alternative email hosting arrangements to minimize further disruption. Request for Assistance I would appreciate guidance from Microsoft engineers, Microsoft 365 administrators, and community members who have experienced similar situations. What is the appropriate escalation process when all available tenant administrator accounts are inaccessible? How can we expedite tenant ownership verification and administrator account recovery? Is there a dedicated Microsoft team that handles critical tenant lockout incidents affecting business operations? What is the recommended recovery process when the administrator cannot access the Microsoft 365 Admin Center? How can we obtain urgent assistance when multiple support tickets and repeated follow-ups have not resulted in a clear resolution? Can the three referenced support tickets be escalated for urgent review by the appropriate Microsoft support team? We are not looking for workarounds that compromise tenant security. We need Microsoft's official recovery process to restore authorized administrative access safely. Microsoft Support Team: If any Microsoft support representatives are monitoring this community, we would appreciate your guidance on the appropriate escalation channel for this incident. We can provide additional information privately through the appropriate official channels. Thank you for your time and assistance. Any guidance that helps us restore our services and protect business continuity would be greatly appreciated. Best regards, Microsoft 365 Tenant Administrator
How to Recover Data from a Damaged or Corrupted OST File When Outlook Cannot Open It
Hi everyone, I have seen several cases where users still have an old OST file but cannot access the mailbox data inside it. This usually happens after an Outlook profile is removed, a Microsoft 365 or Exchange account is changed, a mailbox is no longer available, or the OST file becomes damaged or corrupted. One common misunderstanding is that an OST file can be opened on another computer in the same way as a PST file. However, an OST file is linked to the Outlook profile and mailbox that created it. If that connection is no longer available, Outlook may not be able to open the file normally. Before trying to recover the OST data, it is worth checking a few things: Is the original Microsoft 365 or Exchange mailbox still available? Can the Outlook profile be recreated and synchronized again? Is the issue related to the OST file itself or only the Outlook profile? Do you need the complete mailbox data or only specific folders/items? If the mailbox is still available, rebuilding the Outlook profile and allowing Outlook to create a new OST may be the better approach. However, if the mailbox no longer exists, the Outlook profile has been deleted, or the OST file is damaged and contains the only available copy of the mailbox data, recovery becomes a different process. In these situations, it is important to first check what information is still readable from the OST file. Scanning and previewing the mailbox data before export can help identify available folders, emails, attachments, contacts, and calendar items before creating a new PST file. A practical OST recovery workflow usually involves: Keeping a copy of the original OST file before making any changes. Checking whether the original mailbox can still be synchronized. Scanning the OST file to identify available mailbox items. Reviewing important folders and messages. Exporting the required data to PST. Validating the resulting PST in Outlook. A detailed overview of the OST to PST conversion process, including scanning, previewing, selecting mailbox items, and exporting recoverable data, is available here: https://www.edbmails.com/pages/ost-to-pst-converter.html One important point to remember is that recovery results depend on the condition and readability of the OST file. A conversion tool can help extract available mailbox information, but it cannot recreate data that is no longer present or readable inside the source file.Unable to Open an Old OST File After Outlook Profile or Mailbox Changes
Hi everyone, I am looking for suggestions on handling an old OST file where the original Outlook profile or mailbox is no longer available. The situation is that an OST file contains important mailbox data, but Outlook cannot open it normally after changes to the user account or profile. This can happen after a Microsoft 365 mailbox change, Exchange migration, user account removal, or when an OST file becomes damaged. Since OST files are linked to the Outlook profile and mailbox that created them, simply moving the file to another system does not always make the data accessible. Before attempting any recovery approach, I would like to understand the recommended steps: Is there any Microsoft-recommended method to access an orphaned OST file? What checks should be performed before trying to recover data from the OST? How do administrators usually handle old OST files when the original mailbox is no longer available? What is the best way to validate recovered mailbox data? I would appreciate feedback from anyone who has handled similar Outlook OST recovery scenarios after Microsoft 365 or Exchange changes.MS Outlook 2024 LTSC automatically gets closed and later not getting open
In Outlook 2024 LTSC, the application suddenly stops and closed automatically. Later troubleshooting, it is observed that it doesn't even open in safe mode. Tried to create a new profile where it is not able to search the user from exchange and automatically redirect to Microsoft 365 login page whereas our mail server works in exchange mode. Even after reinstalling the MS office 2024, it is not able to search the user and redirects to Microsoft 365 login page. What is the issue and resolution.Can Microsoft 365 Copilot Access Archive Mailboxes?
After writing about the new 100GB mailbox quota for Microsoft 365 Business Tenants, I was asked if Microsoft 365 Copilot supports Exchange Online archive mailboxes. It does. Microsoft Search indexes items in archive mailboxes, so Copilot can find and use items from those mailboxes. Interestingly, the DLP policy to block external email for Copilot didn’t work. That’s definitely something to investigate! https://office365itpros.com/2026/10/08/archive-mailbox-copilot/
