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- Outlook for Mac. Learn how to integrate your app with Outlook. Microsoft Outlook with an Office 365 subscription is the latest version of Outlook.
- Learn the best troubleshooting tips for Outlook not opening. When Outlook won't open, you can begin taking steps to fix it right away. Learn the best troubleshooting tips for Outlook not opening. Using the Microsoft utility to rebuild a corrupted database might solve the problem of Outlook not opening on your Mac. Including the problem.
- Aug 21, 2019 Office 365 Outlook not opening in my desktop pc. Have any issues Office 365 Outlook behaves normally and so does in the Web APP. For Microsoft Office Outlook.
Problem
When Office 365 users try to open or view attachments in email messages in Outlook Web App, they experience the following symptoms:
- In Office 365, the attachment isn't displayed in the message. Instead, a generic placeholder, such as “1 Attachment” is displayed, and this can't be opened.
- When users try to view attachments in Office 365, they receive the following error message: Access to attachments has been blocked. Blocked attachments:
.
Cause
This issue occurs if the attachment is blocked by Outlook Web App. By default, Outlook Web App blocks attachments that have the following file name extensions:
2014-10-31 Today we are announcing the new Outlook for the Mac, which delivers improved performance and reliability and a fresh look and feel that is unmistakably Microsoft Office. This release offers a more familiar and consistent experience between Outlook on the PC, Outlook on the web and Outlook Web App (OWA) for iPad, iPhone and Android devices. Outlook for Mac works with Microsoft Exchange, Office 365, Outlook.com (including Hotmail and MSN), Gmail, Yahoo Mail, and iCloud Learn more about Office 365 Office 365 is a cloud-based subscription service that brings together premium versions of Word, Excel, PowerPoint, Outlook and OneDrive, with the best tools for the way people work today.
.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
SOLUTION
Change the Outlook Web App mailbox policy to include and exclude the file types that you want.
Under When starting Microsoft Outlook, use this profile, choose Prompt for a profile to be used, and then choose OK. Use a different profile. Restart Outlook. In the drop-down list in the Choose Profile dialog box, choose the new profile name you created.
The following is an example of the Windows PowerShell commands to remove the .xml file type from the BlockedFileTypes and BlockedMimeTypes lists and add it to the AllowedFileTypes and AllowedMimeTypes lists:
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- It may take several minutes before changes to the Outlook Web App policy take effect.
- Be aware that by changing the Outlook Web App mailbox policy to include file types that are blocked by default, you may make your system more vulnerable to security threats.
Workaround
Microsoft Outlook App Not Opening Mac Files
Direct users to compress the files that they intend to send (for example, as a .zip file) and then send the compressed files as attachments.
More information
Opening Party
Still need help? Go to Microsoft Community.