Access old Exchage after migration to 365
Hi all So I have migrated from Exchange OnPrem to Exchange Online. Before migration I have taken a snapshot from the Exchange server, just in case. Now, there is a user who claims that some of her contacts vanished during the migration. So I booted up the backup Exchange and tried logging into the OWA to see if I can find some cantacts there. However, when trying the OWA, using the localhost url I get redirected to the online Outlook. Obviously the Exchange server recognizes soemwhere in the AD that we have migrated. So my question: How do I access the old information on the OnPrem Exchange Server if I did not think of keeping a backup of the DC?Why do Apple macOS and Ubuntu clients display Exchange meeting times one hour earlier than scheduled
If a meeting is generated from Apple macOS and Ubuntu clients showing the meeting time as one hour earlier than the actual scheduled time email solution is exchange server 2019, what will be the issue.
Teams calendar for exchange on prem users not working
Hello I am having issues to make Exchange On prem users use Calendar on teams. Initially Client autodiscover was blocked externally but they added a cname and open flows but I am still having issues to makecalendar on teams work HCW as passed and new hybrid dedicated app was used any help is welcome
Cross-Tenant Mailbox Migration - HTTP 401 Unauthenticated during Test-MigrationServerAvailability
We are performing a Cross-Tenant Exchange Online mailbox migration between two Microsoft 365 tenants. The migration endpoint is configured with ApplicationId authentication and validates successfully. When running: Test-MigrationServerAvailability -Endpoint "MexicoToPortugal" -TestMailbox "<user>" the test consistently fails with: StatusCode="Unauthenticated" HTTP Status Code: 401 We reproduced the issue with two different users. We have already validated: - MailUser configuration - ExchangeGuid - LegacyExchangeDN (X500) - ExternalEmailAddress - Accepted Domains - Organization Relationships - Migration Endpoint - Enterprise Application - Mailbox.Migration permission - Admin Consent - Cross-Tenant Migration licensing The same HTTP 401 error occurs for multiple mailboxes after all configuration issues are corrected. Has anyone experienced a similar Cross-Tenant Mailbox Migration scenario where Test-MigrationServerAvailability returns HTTP 401 Unauthenticated even though the Enterprise Application, Mailbox.Migration permission and Admin Consent are correctly configured?Retirement of Azure Communication Services
Microsoft has announced several retirement and breaking changes in September 2026. One notable change is the retirement of Azure Communication Services as a standalone offering, scheduled to take effect on September 30, 2028. Organizations currently using Azure Communication Services should review the announcement, assess the potential impact on their environments, and begin planning accordingly. https://learn.microsoft.com/en-us/azure/communication-services/acs-retirement-and-breaking-changes-guideSincronizzare scheda contatti dell'account di posta elettronica con active directory
Good morning, I need to update the mobile and office phone numbers for users in Active Directory and then synchronize them with the contact information in their email accounts. The goal is to ensure that when a user types an email address in Outlook and hovers their mouse over it, the phone and mobile numbers are visible in the contact card.
Exchange 2010 to Microsoft 365 Migration – Recommended Approach and Tools
I’m looking for guidance on migrating Exchange 2010 (on-premises) to Microsoft 365 / Office 365. Is a direct migration from Exchange 2010 supported, or is an intermediate hop (such as upgrading Exchange or setting up a hybrid configuration) required? Additionally, could you please recommend any reliable tools that can help with this migration? I also have a few PST files that need to be migrated as part of the process. I’d appreciate insights on best practices, common challenges, and lessons learned from real-world migrations. Thanks in advance for your help.
Get-DistributionGroup error
【I have a Exchange Online Hierarchical books below:】 Group1 ╚Group2 ╚Group3 ╚Group4 【The group all create by powershell script below and work fine till today】 $objectDistriGroup = $null $objectDistriGroup = Get-DistributionGroup - Identity $stringAlias 2>&1 #Check Alias If($objectDistriGroup -eq $null){ $objectDistriGroup = Get-DistributionGroup - Identity $stringName 2>&1 #Check Name If($objectDistriGroup -eq $null){ $objectDistriGroup = New-DistributionGroup -Name $stringName -Alias $stringAlias -Confirm:$false 2>&1 $objectDistriGroup | Set-Group -IsHierarchicalGroup $true - SeniorityIndex $stringSeniorityIndex #Add to parent group Add-DistributionGroupMember - Identity $stringParent -Member $stringAlias -Confirm:$false 2>&1 } } ) 【Today I'm trying to add "Group5" in "Group1", but got the output below in my log file】 PS>error(Invoke-WebRequest): "{"error":{"code":"NotFound","message":"Error executing cmdlet","details":{"code":"Context","target":"","message":"{¥"ClassName¥":¥"Microsoft.Exchange.Configuration.Tasks.ManagementObjectNotFoundException¥",¥"Message¥":¥"....................................The operation couldn't be performed because object '{0}' couldn't be found on '{1}'...................................."internalexception":{"message":"Exception of type 'Microsoft.Exchange.Management.PSDirectInvoke.DirectInvokeCmdletExecutionException' was thrown." 【After some test, looks like "Get-DistributionGroup" cause these error message.】 But when I use cmdlet "Get-DistributionGroup - Identity Group5" It return "Group5" information as normal. DId I missed something update? How to fix this error. Thank you so much, Any information will be appreciated!
Permission activesync on smartphone
Hi everyone, when you grant the permissions in question to manage company email from a smartphone, do these permissions, in addition to Remote Wipe, Password Enforcement and Device Encryption (I remember these as the main ones), somehow give the Exchange administrator access to my personal data? For example, photos, any documents saved on the SD card or on the smartphone itself? Thanks in advanced!Outlook Desktop users continually prompted for credentials On-Prem Exchange SE
Battling ongoing issues with users being continually prompted for password using Outlook 2024 LTSC with on-prem Exchange 2019 SE. Removed Windows credentials, turned off cache mode, removed shared calendar(s), outlook connection status seems fine. Only (temp) workaround seems to be removing mail profile and recreating it. All other network resources on domain are fine. Any input appreciated. Thanks
