Sent or expected an email with an attachment, and it bounced or never arrived? North Central University email blocks certain types of files, like programs and scripts, because they're a common way to spread malware. Here's what happens and what to do instead.
What gets blocked
Mostly files that can run or install something on a computer, like programs, installers, and scripts. A few examples: .exe, .msi, .bat, and .vbs. Macro-enabled Word files (.docm) and .rar compressed files are blocked too. Microsoft maintains the list, so it can change.
What happens
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If
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Then
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You send a blocked file
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Someone sends you a blocked file
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The message is rejected and the sender gets the bounce. You won't see it. Ask them to share it another way.
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You open email in Outlook on the web
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Some file types can't be opened or downloaded there, even if the message arrived.
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Share the file another way
Don't rename or disguise the file
Changing the file extension or hiding it to get past the block is exactly what malware does. If a file is legitimate, share it with a link instead.
Got an unexpected attachment that did come through? Be careful before you open it. See Safe Downloading: How to Avoid Harmful Files.
Get help
Need to send a file that keeps getting blocked? Submit a request through Microsoft Office 365 E-mail & Calendar.
Still need help? Call the IT Service Desk at 612.343.4170 or visit Miller Hall 226, Monday–Thursday, 7:30 a.m.–9 p.m.; Friday, 7:30 a.m.–4:30 p.m. CT.