AxCrypt encrypted files should have a file extension “.axx”. Also, default application for the file type “.axx” should be AxCrypt app only.
Might be, the default application is not mapped for the file extension “.axx” in your system. So please change the default application to AxCrypt for the file extension for “.axx” with the help of following links,
Now all the encrypted files with the file extension ‘.axx’ will be opened by double clicking the file. Restart the system/AxCrypt app, if required
Also check with the pdf(Adobe Acrobat) extension. It is not set the default extension in pdf(Adobe Acrobat). Please set the default extension in pdf(Adobe Acrobat), then open the file(s).
Still, if you are facing any issues/queries, please write to Support@axcrypt.net. we are happy to help you