How to open .dat files?

Hi experts,

I searched online on how to open files prexied to .dat extension.

I received these files from one of my friends whom she could not open these files. So she just sent me 4 files which are prefixed to .dat extension.

I went to this url to read more about it but it still open them in rubbish coded machine language

Anyways, I assumed its a pdf file or word docs. All of them (4 files in total) are named

1.Evaluation AFPPD 1.dat (323KB)
2.Evaluation AFPPD 2.dat (244KB)
3.Evaluation AFPPD 3.dat (231KB)
4.Evaluation AFPPD 4.dat (273KB)

Will these be files or copied-extensions of the original files (ie: Evaluation AFPPD 1.dat (1MB))?

What others think?
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Dave BaldwinFixer of ProblemsCommented:
The 'dat' extension has been used by too many programs to give you a reliable answer.  If you can view the hex code with something like FileAlyzer, you can often see what program generated them and maybe that will give you a clue about what to do with them.
JohnBusiness Consultant (Owner)Commented:
No. They are normally screwed up Outlook Files. If Outlook (normally Express) screwed up a DOC or PDF file, you need to contact the person and ask them to resend properly (or have someone else send the file to you). Once .DAT there is not much useful you can do.
Without knowing the source of the file it is difficult to answer, try using outlook.

How did you come by these files.  You may need to use hex editor to try to glean the source/what created the file.

There are too many possibilities.

Did you name the file, look at what afppd is and see whether that helps in shedding light on the situation.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
File Sharing Software

From novice to tech pro — start learning today.