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i want to download recipes froma website and firefox tells me the adobe reader in use will not read

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i also wanted to check an activity calender from a website and it says : "The Adobe Acrobat/Reader that is running can not be used to view PDF files in the Web Browser Please exit Adobe Acrobat/Reader and exit your Web Browser and try again"> of course nothing works so can you help please?

i also wanted to check an activity calender from a website and it says : "The Adobe Acrobat/Reader that is running can not be used to view PDF files in the Web Browser Please exit Adobe Acrobat/Reader and exit your Web Browser and try again"> of course nothing works so can you help please?

Modified by blueduck2

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