Whether you need to send a video to a friend, or receive a database from a co-worker, Yahoo email attachments can help you do it. Yahoo usually allows people to attach and receive files without incident. However, you may sometimes find it difficult or impossible to open or send an attachment. When that happens, the problem usually resides in your browser or in the attachment file itself.
Verify that your attachment is not encrypted. Yahoo does not support encrypted files or files coded in such a way to keep unauthorized people from viewing it. Ask the sender to send an unencrypted version of the file if he sent you an encrypted one in the original message.
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Determine where your browser stores downloaded files. Your browser's help documentation can explain how to determine where that location is. The download location may change when browser settings are changed.
Ensure that you use a browser that Yahoo supports. The company lists supported browsers as Chrome version 25 or newer, IE 9.0, Safari 4.0 or newer and Firefox 19 or newer. Download the latest version of one of those browsers if you still have attachment problems after trying other solutions.
It's possible for you to save a Yahoo email attachment successfully but not have the ability to open it. This scenario may occur when your computer doesn't have a program that can open the file. For instance, if someone sends you a file that has a VSDX extension -- that's a Microsoft Visio file -- that won't open unless you have a program that opens those types of files. If you cannot open an attachment that has a file extension you don't recognize, you can type the extension name into sites such as FileInfo.com or OpenWith.org (links in Resources).
You can also experience problems sending an attachment. Rename your file before you try to attach it, if the file has special symbols. Otherwise, Yahoo will not allow you to attach it to a new message. A special symbol is a character such as /, $ or #.
Ensure that the total size of your Yahoo email message is no larger than Yahoo’s limit of 25MB. The total size includes the size of your message and all of the files you attach.