It may take several minutes before changes to the Outlook Web App policy take effect.

Get-OwaMailboxPolicy | Set-OwaMailboxPolicy –AllowedMimeTypes = 'text/xml', 'application/xml'}

Get-OwaMailboxPolicy | Set-OwaMailboxPolicy -BlockedMimeTypes = 'text/xml', 'application/xml'} Get-OwaMailboxPolicy | Set-OwaMailboxPolicy -AllowedFileTypes = '.xml'} xml file type from the BlockedFileTypes and BlockedMimeTypes lists and add it to the AllowedFileTypes and AllowedMimeTypes lists: Get-OwaMailboxPolicy | Set-OwaMailboxPolicy -BlockedFileTypes = '.xml'} The following is an example of the Windows PowerShell commands to remove the.

Vsmacros, msh2xml, msh1xml, ps2xml, ps1xml, mshxml, gadget, mhtml, psc2, psc1, msh2,msh1, aspx, xml, wsh, wsf, wsc, vsw, vst, vss, vbs, vbe, url, tmp, shs, shb, sct,scr, scf, reg, pst, ps2, ps1, prg, prf, plg, pif, pcd, ops, mst, msp, msi, msh,msc, mht, mdz, mdw, mdt, mde, mdb, mda, maw, mav, mau, mat, mas, mar, maq, mam,mag, maf, mad, lnk, ksh, jse, its, isp, ins, inf, htc, hta, hlp, fxp, exe, der,csh, crt, cpl, com, cmd, chm, cer, bat, bas, asx, asp, app, adp, ade, ws, vb, js SolutionĬhange the Outlook Web App mailbox policy to include and exclude the file types that you want. By default, Outlook Web App blocks attachments that have the following file name extensions: This issue occurs if the attachment is blocked by Outlook Web App. When users try to view attachments in Office 365, they receive the following error message: Access to attachments has been blocked.Instead, a generic placeholder, such as '1 Attachment' is displayed, and this can't be opened. In Office 365, the attachment isn't displayed in the message.When Office 365 users try to open or view attachments in email messages in Outlook Web App, they experience the following symptoms:

Owa outlook 365