Download files(pdf, docx) not opening in Adobe.. Instead FDN list opens

[Android Central Question]

When I open my downloaded file, it normally opens in Adobe but now some FDN(fixed dialling list) opens instead..

 

[Rukbat]

.pdf files should open in a PDF reader (Adobe is one), but a .docx file is a Microsoft Word file, so you'll need some app that can read a Word file - there are a few of them.