Anlage kann nicht geöffnet werden - Unable to open attachment/english

Outlook blocks potentially dangerous attachments dependant on the filetype (eg .com, .exe, .hlp, .inf, .pif or .vbs). These attachmernts cannot be opened or saved to disk. If you try to send such an attachment Outlook displays a warning that the message contains attachments that are potentially unsafe and therefore the recipient may not be able to open these attachments.

If you really need to get such "potentially unsafe" attachments then please ask the sender to use a zip program to package the files or to rename it (eg rename program.exe as program.exe_ok) before attaching them to the e-mail message. You should do the same before sending such attachments. In the message, you can include instructions that explain how to extract the files from the zipped package.