I can open anything attached to e-mail. On the same computer, my wife can open nothing on hers? We have outlook express.
When you receive an email attachment in Outlook Express, you may be prevented from opening or downloading the file attachment. This behavior occurs if the Do not allow attachments to be saved or opened that could potentially be a virus option is enabled, and the e-mail attachment is determined by Outlook Express to be "unsafe". By default, the Do not allow attachments to be saved or opened that could potentially be a virus option is enabled in Outlook Express 6 SP1. When this virus-protection feature is enabled, Outlook Express uses the Internet Explorer unsafe file list and the Confirm open after download setting in Folder Options to determine if a file is safe. Any e-mail attachment with a file type that is reported as "unsafe" is not downloaded, and access to the attachment is removed.
Warning: This is a feature of Outlook Express where-in it protects your system from virus attachments. If you're sure that the attachment is safe AND you have a real-time virus scanner running in the background, you may disable the virus protection feature of Outlook Express. Restart Outlook Express. Once saved the required file attachment, re-enable the great feature of Outlook Express. Restart Outlook Express.
I found the following on Microsoft's site. Note that this is for Outlook 2010. This should be similar with Express. The only real difference should be the 14.0 directory because it is a different version.
This would have fixed my issue, but it made me realize what the real issue was. The real issue was that a windows update had made the registry point to the wrong location. I corrected the problem and everything was fixed.
Another possibility is that this folder may just need cleaned out. In that case you would just need to go to that directory, select all files in that directory, and delete them. This will not hurt anything, they are just attachments to emails. If your computer needed them, it will just re-request them from the email server. If you cannot find the directory, you may need to enable the ability to view hidden files and folders.