If you're having trouble opening a DAT file, I'll show you a simple and free way to do it. This method works on both Mac and PC. Just open your browser and go to winmaildat.com. It's a straightforward ...

I have a client who has a DVR security system that runs using a program on a computer called Jwin Sheriff. The Jwin company is a joke, they make crap and they don't support it. I can't get through to ...

We’ve all seen mysterious .dat file attachments in our inboxes from time to time. In most cases the .dat attachment originates in Microsoft Outlook, which produces outgoing messages using a slightly ...

Q. I sometimes receive e-mail messages with a “winmail.dat” file attached that I cannot open. Why does this happen, and what can I do to fix it? A. The winmail.dat file usually appears because various ...

You need to make sure that opening the app has administrator privileges. For that, you can right-click on the app and select Run as an administrator. If you want to always run the program as an ...