You're here because you have a file that has a file extension ending in .pwdp. Files with the file extension .pwdp can only be launched by certain applications. It's possible that .pwdp files are data files rather than documents or media, which means they're not meant to be viewed at all.

Text files with the .pwdp extension are created using Password Pad. This text editing application developed by Tan Thor Jen can encrypt the content stored in text documents to protect it against illegitimate access by third party users. The additional security functionality provided by Password Pad involves the generation of a unique password that will secure text documents and save it as PWDP files. This means text documents with the .pwdp extension are secured by a password generated by Password Pad and cannot be opened, unless the correct password is provided by users who wish to gain access to the content of the text documents. Users can take advantage of the benefits offered by Password Pad and PWDP file format technology for encrypting and securing their financial information (credit card and banking details among others) and confidential data with personally identifiable and private information that they store in their computer's internal and external data storage devices. Also, passwords generated by the Password Pad application is unique to that PWDP text document. This means a password for a .pwdp file may always be different from passwords generated by the same application for different PWDP text files.

Launch a .pwdp file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .pwdp file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .pwdp files aren't yet associated with it. In this case, when you try to open a .pwdp file, you can tell Windows which application is the correct one for that file. From then on, opening a  .pwdp file will open the correct application. Click here to fix .pwdp file association errors

Be careful not to rename the extension on .pwdp files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

A file extension is the set of three or four characters at the end of a filename; in this case, .pwdp. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.