Archive Folder unavailable to portable users

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Hi @Moshiur (Moshiur Khan)

Thanks for reaching out to the Microsoft Q&A forum.  

Based on my research, I would like to share the insights gathered so far. 

In-place Archive in Exchange Server does not support Exchange ActiveSync. This means that native mobile mail applications do not support the In-place Archive feature. In addition, according to the documentation In-Place Archiving in Exchange Server | Microsoft Learn, support is listed only for Outlook on the web and the Outlook desktop client. Outlook for mobile is not mentioned, which indicates that In-place Archive is not expected to be available through Outlook mobile. 

Regarding the Outlook desktop client not displaying the In-place Archive folder, this may relate to the MAPI/HTTP protocol. The following scenarios can affect visibility: 

1. The MAPI/HTTP protocol is disabled on the Exchange Server. 
2. The MAPI/HTTP protocol is enabled or disabled at the mailbox level for specific users. 

To verify the MAPI/HTTP setting for the affected mailbox, you may run: 

Get-CASMailbox -Identity <AliasOrSMTP> | Format-List DisplayName, MapiHttpEnabled 

If the value is True, you can disable it with: 

Set-CASMailbox <Alias> -MapiHttpEnabled $False 

Next, please check the tenant-wide MAPI/HTTP setting: 

Get-OrganizationConfig | Format-List MapiHttpEnabled 

If the value is set to False, you can enable it with: 

Set-OrganizationConfig -MapiHttpEnabled $True 

Reference: Cannot access archive mailbox in Outlook - Exchange | Microsoft Learn 

Additionally, it is important to confirm that the Outlook version in use supports In-place Archive. You can review this information here: Outlook license requirements for Exchange features - Microsoft Support 

I hope these insights are helpful. If you have any updates or need further clarification, please feel free to share. 

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