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We are currently investigating an issue affecting OneDrive to OneDrive migrations that use Delegate Application authentication. Customers may encounter the error message "Your migration failed while checking destination credentials" when attempting to run migrations under this configuration. Our engineering team is actively investigating the root cause. No action is required on your part at this time. We will provide updates as our investigation progresses. We apologize for any inconvenience this may cause.

The root cause has been determined, and we are working to release a change to address this error shortly.

We have resolved the issue affecting OneDrive to OneDrive migrations using Delegate Application authentication. Customers who previously encountered the error message "Your migration failed while checking destination credentials" should now be able to run migrations successfully. If you continue to experience issues, please resubmit your migration. If problems persist, contact our support team. We apologize for any inconvenience this may have caused.

We are currently experiencing an issue with our online cart system for US Address Customers that may cause online orders to fail at checkout. Our team is actively investigating and working to resolve the problem as quickly as possible.

This incident is resolved.

We are currently experiencing an issue with our online cart system that may cause online orders to fail at checkout. Our team is actively investigating and working to resolve the problem as quickly as possible.

This incident has been resolved.

We have upgraded our Microsoft 365 authentication to Microsoft’s modern identity platform (v2) to improve security, reliability, and configuration experience. Known Issues: OneDrive Migrations (Delegate App) Customers using the Advanced Option ForceOneDriveNonGlobalAdminAuthExport=1 may experience credential failures. This option remains functional for SharePoint-to-SharePoint migrations. Recommendation: Remove this advanced option if possible and assign the SharePoint Administrator role to the Delegate account. This issue is under investigation. Tenant-to-Tenant Coexistence (Free/Busy Setup) Organizational relationship creation is currently failing for coexistence projects. Workaround: If free/busy is not required, create a standard mailbox project without coexistence. We are actively investigating and will provide updates as available.

This incident is now resolved.

Late next week, we will begin rolling out a security-enhancing update to our authorization flow. As part of this update, a small set of workloads require user action to continue running successfully. OneDrive, SharePoint and Teams Collaboration endpoints using delegated permissions will need the Tenant ID added in the Endpoint Settings page and PKCE consent completed. BYO app registrations will no longer function and must be switched to the BitTitan app. For full instructions and details, please refer to the guidance pages below: Required Actions & Resolution Guide [https://help.bittitan.com/hc/en-us/articles/43575952076827-Post-Deployment-Action-Items] Endpoint Settings Guide [https://help.bittitan.com/hc/en-us/articles/42628192621211-Endpoints-Setting-Guide] Consent Flow Guide [https://help.bittitan.com/hc/en-us/articles/42629928893851-Project-Summary] This notice is informational to ensure customers can complete the necessary updates.

The rollout is now expected to begin in the early part of the next week. No additional customer action is required beyond what was previously communicated. Private Chat History (PCH) will not be supported following this deployment as part of an ongoing re-implementation initiative. This work is intended to deliver an improved PCH experience, and PCH support will be reintroduced in a planned upcoming release.

We’ve upgraded our Microsoft 365 authentication experience to adopt Microsoft’s modern identity platform (v2), bringing stronger security, improved reliability, and a smoother configuration experience. What’s New • A modern PKCE-based authentication flow • Enhanced security with Azure Key Vault • Support for Microsoft’s latest identity platform (OAuth2) • Simple, UI-based permission selection • A guided in-UI consent experience for faster setup • Better compatibility with MFA-enabled tenants Action Required: Some customers may need to re-authenticate depending on their configuration. Required Actions & Resolution Guide [https://help.bittitan.com/hc/en-us/articles/43575952076827-Post-Deployment-Action-Items] Endpoint Settings Guide [https://help.bittitan.com/hc/en-us/articles/42628192621211-Endpoints-Setting-Guide] Project Summary - Consent Flow Guide [https://help.bittitan.com/hc/en-us/articles/42629928893851-Project-Summary]

Update: Resolved Issues, Known Issues & Workarounds Following the recent deployment, we have identified a small number of edge-case scenarios that may affect specific configurations. Most have simple workarounds, and our teams are actively addressing these issues. Resolved Issues : The following issues identified after deployment have been resolved: 1. SSO sign-in for SSO-enabled domains An issue that prevented users from logging in using SSO-enabled domains has been resolved. 2.SharePoint auto-discovery SharePoint site auto-discovery is now functioning as expected. We are actively working to address these scenarios and will provide updates as improvements are rolled out. If you experience issues outside of the cases described above, please contact Support for assistance. Known Issues : M365 Mailbox Issue: Scoping Some customers, who are using scoping functionality, are receiving the error: “Your migration failed while checking source credentials. Validate Token failed, please check EWS Application Permissions in Azure App.” This is currently under investigation. Recommendation: If possible, run your project without using scoping. The migration should complete successfully. Delegated Consent may return a 500 error : In some cases, attempting delegated consent may result in an internal server error. Workaround: Edit the project, save it without making changes, and then retry the consent flow. This resolves the issue in most cases. Consent may reference a previously configured tenant after changing endpoints : If a project’s source or destination endpoint is edited to point to a different tenant, the consent flow may still attempt to authorize the previously configured tenant. Workaround: If the project has not been started, create a new project using the updated tenant details. Consent banner may not appear for specific Google → Microsoft 365 (v3) document migration scenarios In certain edge cases, the consent-required banner may not display even when consent has not yet been provided. Recommendation: Review the Project Summary page and confirm that the consent status shows Authorized / Consented before starting the migration Consent banner may not refresh after editing project endpoints When editing a project and changing tenant or permission settings, the consent banner may not immediately reappear. Recommendation: Verify the consent status from the Project Summary page to ensure authorization is complete.

Update : Our teams continue to actively investigate and address the remaining items identified after deployment. Below are the latest updates and recommendations. M365 Mailbox Issue: Scoping Some customers using scoping functionality may encounter the error: “Your migration failed while checking source credentials. Validate Token failed, please check EWS Application Permissions in Azure App.” This remains under investigation. Recommendation: If possible, run your project without using scoping. The migration should complete successfully. If scoping is required and the above recommendation does not resolve the issue, ensure the source application includes the additional permission Exchange.ManageAsApp, and follow the steps outlined in below document. Document Link: [M365 Mailbox and Archive Migrations - Scoping Option for API Permissions](https://help.bittitan.com/hc/en-us/articles/27712633347099-M365-Mailbox-and-Archive-Migrations-Scoping-Option-for-API-Permissions#h_01J3NXCYXSE6V647FTHKRPR2KX) ----- Tenant-to-Tenant (T2T) Coexistence – Organizational Relationship Creation Tenant-to-Tenant coexistence projects are currently unable to complete the required cross-organizational free/busy setup process. Workaround: If free/busy availability between tenants is not required (typically only needed for large, long-running coexistence projects), we recommend creating a standard MigrationWiz mailbox project without coexistence while we work to resolve this issue. ----- We appreciate your patience and continued cooperation as we work to fully resolve these items. Additional updates will be shared as progress is made.

We are continuing to work on a fix for this issue

Update : We have upgraded our document migration authentication to modern authentication standards for SharePoint, Teams, and OneDrive. This enhancement strengthens security, improves reliability, and aligns our migration platform with current Microsoft 365 identity best practices. As part of this upgrade, legacy authentication mechanisms such as SharePoint IDCRL are no longer used. Customer Impact: Migration projects using delegated permissions (SharePoint, Teams, or OneDrive) will fail until permissions are re-consented. To continue, customers must re-consent the delegated permissions and then re-run the migration. For more information, please review our release note. We remain committed to continuously improving the security, reliability, and quality of our migration platform. If you have any questions, please feel free to reach out to our Support team.

With the release of our Microsoft modern identity platform (v2) upgrade, designed to enhance security, reliability, and the overall configuration experience, the majority of the initial issues identified following launch have now been resolved.

Migration jobs continue to process, but stopping them from the MigrationWiz UI is working inconsistently. Please contact Support if you require any migration lines to be stopped. Monitoring We have implemented a change and are seeing previously stalled migrations being processed. We are continuing to monitor the situation. Dec 07, 2025 - 10:12 PST Investigating Some customers may experience migrations stuck in the submitted state. We are aware of this issue and are working to resolve it. Dec 07, 2025 - 06:34 PST

This incident has been resolved.

Migration jobs continue to process, but stopping them from the MigrationWiz UI is working inconsistently. Please contact Support if you require any migration lines to be stopped

Some customers may experience migrations stuck in the submitted state. We are aware of this issue and are working to resolve it.

We have implemented a change and are seeing previously stalled migrations being processed. We are continuing to monitor the situation.

Migration jobs continue to process, but stopping them from the MigrationWiz UI is working inconsistently. Please contact Support if you require any migration lines to be stopped.

While the earlier issues have been resolved, customers who reset their password today will need to reset it again. For customers who did not update their password today, their previous password should now work.

This incident has been resolved.

MigrationWiz is currently experiencing a login issue. This is not a security incident. Users encountering the issue and receiving an “Access Denied” error should reset their password, which will restore access. We are investigating the cause and will provide an update soon.

MigrationWiz is currently experiencing a login issue. This is not a security incident. Users encountering the issue and receiving an “Access Denied” error should reset their password, which will restore access. Additionally, some users may experience issues with license application and other related functions. We are investigating the cause and will provide an update soon.

We are continuing to work on a fix for this issue.

All previously identified issues have been resolved.

We are currently investigating an issue affecting document migrations involving Google Drive, OneDrive, and SharePoint. Customers may experience intermittent authentication or connectivity errors when running migrations in these areas. As a temporary workaround, re-running the affected migration items typically resolves the issue. Our engineering team is actively working toward a permanent resolution. We appreciate your patience and will provide additional updates as soon as they become available.

We have implemented a series of platform enhancements to improve authentication reliability and connections for document migrations across OneDrive, SharePoint, and Google Drive. These updates have strengthened the way secure connections are established and managed, resulting in more consistent credential validation and reduced authentication-related disruptions. In addition to improved reliability, we have also made optimizations to enhance data transfer speed and throughput. These changes help migrations complete faster and more efficiently, particularly for large volumes of data or high-concurrency migration scenarios. As of our most recent deployment on June 30, we are are seeing very promising results We will continue to monitor the platform to ensure stable performance and a seamless migration experience for all users.

We have confirmed through comprehensive testing and positive customer feedback that our recent platform enhancements have successfully resolved the reported performance issues affecting authentication reliability and connection stability during document migrations. If you continue experiencing any challenges related to authentication or connection reliability while using MigrationWiz, please reach out directly to our Support team for assistance. Thank you for your patience as we worked to address this matter.

We are currently investigating migrations that are failing with the error: “The method or operation is not implemented.” in some Microsoft Teams and Sharepoint migrations. Our engineering team is actively working to identify the root cause and implement a resolution. We will update this status again no later than Tuesday, April 22.

We are aware that some migrations are failing with the error: “The method or operation is not implemented.” in some Microsoft Teams and SharePoint migrations. Our engineering team has identified a solution and is actively working on developing the fix. We are targeting deployment by Friday, May 2, and will continue to provide updates as progress is made.

We’re pleased to confirm that the issue causing migration failures with the error “The method or operation is not implemented” has been fully resolved. We apologize for any inconvenience this may have caused, and appreciate your patience as we worked to implement a fix

As of March 31, 2025, Microsoft has ended support for app-only authentication in the OneNote API. To maintain functionality, users must switch to delegated authentication. This is a Microsoft platform change, and MigrationWiz cannot mitigate this. Microsoft’s Official Announcement(https://learn.microsoft.com/en-us/graph/api/resources/onenote-api-overview?view=graph-rest-1.0) Using Delegated Permissions for OneDrive, SharePoint, and Teams migrations(https://help.bittitan.com/hc/en-us/articles/360038153373-Using-Delegated-Permissions-for-OneDrive-SharePoint-and-Teams-migrations)

As of March 31, 2025, Microsoft no longer supports app-only authentication for the OneNote API. If you need to migrate OneNote files, you must use delegated permissions in accordance with Microsoft’s changes. For more information, please review our Help Center article(https://help.bittitan.com/hc/en-us/articles/360038153373-Using-Delegated-Permissions-for-OneDrive-SharePoint-and-Teams-migrations). If you have any questions, feel free to contact our support team.

Microsoft has announced a change to Exchange Web Services (EWS) access in Exchange Online, effective at some point in April 2025 (Microsoft has not provided a specific date for this change). Once this change has been made, EWS access will only be allowed if both the organization-level and user-level EWSEnabled flags are set to True. To avoid any service disruptions, please ensure that EWS is enabled at both levels in your Microsoft 365 tenant. If either flag is set to False, EWS requests will be denied, and your migrations or services relying on EWS may fail. We strongly recommend reviewing your settings in advance. For more information, refer to Microsoft’s official announcement: 👉 [The way to control EWS usage in Exchange Online is changing.](https://techcommunity.microsoft.com/blog/exchange/the-way-to-control-ews-usage-in-exchange-online-is-changing/4383083) If you need assistance, please contact our support team.

This informational notice about Microsoft’s upcoming EWS access changes is now closed. No further updates are expected. Please ensure your organization has made the necessary adjustments to avoid service disruption

We are aware that some customers are receiving a credential verification error for OneDrive migrations. The team is working to resolve this issue.

This incident has been resolved.

You may see an informational message noting that your destination region is outside of Germany but this message is in error. In fact your migration will run in the correct location, based on your settings. You can safely ignore this message.

This incident has been resolved.

BitTitan is aware of a Certificate issue impacting all OneDrive, SharePoint, and Teams migrations. We are actively working to resolve the error.

The certificate issue for OneDrive, SharePoint and Teams migrations has been fixed. Please resubmit any failed migrations.

Due to an ongoing Microsoft service degradation, some O365 Mailbox Migrations may become stuck in the migrating phase. These mailboxes will appear not to be moving any data for an extended period. The workaround at this time is to Stop the migration and Resubmit the mailbox. In most cases, the new connection will bypass the issue, and the mailbox migration will be complete. In some cases, specific mailboxes may need to be Stopped and Resubmitted again.

We believe we have located the root cause of the stalling O365 mailbox migrations, which was amplified by the Microsoft Service Health issue last week. We are preparing a code fix, with a target release for today 12/4 in the late afternoon US time, which we anticipate will resolve the Stalling Mailbox issue.

After a successful MigrationWiz release on 12/4, we are no longer seeing issues with Stalling Mailboxes.

We are currently experiencing a known issue with the Google API due to recent changes made by Google. These changes are causing extreme throttling and slowness in our services. To mitigate this issue, we recommend using the Google (IMAP) connector for all Google Mail migrations until we can resolve the problem. We apologize for any inconvenience this may cause and appreciate your understanding as we work to address this issue.

We have collaborated with Google and implemented the necessary algorithms to mitigate the throttling issue. The Google API endpoint is now stable and can be used for all new migration projects. Please note, for mailboxes that have already been migrated using the Gmail IMAP connector, continue using that connector to avoid any potential data inconsistencies. The Google API endpoint should be used for new mailbox migrations only.

Users are reporting an issue with editing or saving Advanced Options using the left panel. Please modify the Advanced Options screen by selecting the down arrow next to the Edit Project Button and then selecting Advanced Options from the drop-down menu. Before you submit any migrations, please confirm your Advanced Options are in place and valid.

Identified - Users are reporting an issue with editing or saving Advanced Options using the left panel. Mailbox, Public Folder, and Teams Private Chat projects are not impacted. Please modify the Advanced Options screen by selecting the down arrow next to the Edit Project Button and then selecting Advanced Options from the drop-down menu. Before you submit any migrations, please confirm your Advanced Options are in place and valid.

This incident has been resolved, the Advanced Options from the left panel works as expected.