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All Adobe pdf files have been changed to Firefox HTML files

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  • 1 has this problem
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  • Last reply by cor-el

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Within the last couple of days, all of my Adobe Reader files that have an extension of pdf have been changed to Firefox HTML files. When I attempt to open them, the HTML files are readable, but are not in pdf format. I cannot send these files to other people and they are not easy to print, manage, etc. Please tell me how I can change them back to pdf format.

Thank you.

Within the last couple of days, all of my Adobe Reader files that have an extension of pdf have been changed to Firefox HTML files. When I attempt to open them, the HTML files are readable, but are not in pdf format. I cannot send these files to other people and they are not easy to print, manage, etc. Please tell me how I can change them back to pdf format. Thank you.

Chosen solution

Open your file explorer and find one of those files. Right-click and select Properties.

Under General, find Open With and select Change. You should now see a list of programs to select from.

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Chosen Solution

Open your file explorer and find one of those files. Right-click and select Properties.

Under General, find Open With and select Change. You should now see a list of programs to select from.

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Are that really HTML files with HTML markup code or some kind of text files ? What content is in the HTML files ? Is that the content what you would expect from the downloaded file ?