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Why do some email attachments not open?

Asked by Avtoservis_inei — Jan 3, 2026 — Technology & Internet Resolved

Someone sent me a file as an email attachment and when I click it, my computer says it can't open it or asks me to choose a program. Why does this happen? How do I know what program I need? Is it dangerous to open attachments I can't identify? How do I tell the sender what format to use?

✓ Best Answer
admin — Score: 4

My nephew set this up for me and it was easier than I expected. Don't be intimidated by the technical stuff — most of it is just clicking Next a bunch of times. If you get stuck, the Help file actually has decent instructions for once.

4 Answers

✓ Best Answer
admin — Jan 4, 2026

My nephew set this up for me and it was easier than I expected. Don't be intimidated by the technical stuff — most of it is just clicking Next a bunch of times. If you get stuck, the Help file actually has decent instructions for once.

4
Avtoservis_hnei — Jan 5, 2026

My advice: don't overthink it. Pick the option that works best for your situation right now. Technology changes every 2-3 years anyway so nothing you choose today is permanent. The best technology is the one you actually use.

2
Alice Hartwell — Jan 5, 2026

This is actually a really common misconception. The technology works differently than most people think. I'd recommend reading HowStuffWorks.com for a good beginner explanation before diving into the technical details.

0
Avtoservis_gmei — Jan 5, 2026

Be REALLY careful what you download to fix this. Half the 'free fix-it' programs you find are spyware in disguise. Stick to known-good stuff like the tools from major sites, and always scan downloads with your antivirus before running them.

0

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