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how to use deafult pdf viewer ? when i give windows in my pc pdf file open in firefox deafultly but suddenly its not working how to fix this ?

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litonphone
litonphone
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please tell me how to use default pdf reader in firefox ? when i give windows in my pc pdf file open in firefox deafultly but suddenly its not working how to fix this ? pdf not open when i give ok with preview in firefox its not open its offer again same message

please tell me how to use default pdf reader in firefox ? when i give windows in my pc pdf file open in firefox deafultly but suddenly its not working how to fix this ? pdf not open when i give ok with preview in firefox its not open its offer again same message

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guigs
guigs
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In order to change the default pdf reader please see: View PDF files using Firefox’s built-in viewer

In order to change the file association: Applications panel - Set how Firefox handles different types of files