This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

mhtml is not associated

more options
Locking duplicate thread.
Please continue here: [/questions/841839]

I have NOT found way what the problem it or how to FIX it.

Message is: Firefox doesn't know how to open this address because the protocal (mhtml) isn't associated with any program;

How do I fix this. Please Help me with problem.

Donna Frank

<blockquote>Locking duplicate thread.<br> Please continue here: [[/questions/841839]]</blockquote> I have NOT found way what the problem it or how to FIX it. Message is: Firefox doesn't know how to open this address because the protocal (mhtml) isn't associated with any program; How do I fix this. Please Help me with problem. Donna Frank

Modified by cor-el

All Replies (1)