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How do I get rid of"Index of file:///C:/" as the opening page?

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Every time Mozilla is opened, the following file is displayed: Index of file:///C:/ How can I get rid of it and set up a different homepage?

Every time Mozilla is opened, the following file is displayed: Index of file:///C:/ How can I get rid of it and set up a different homepage?

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Start Firefox in Use Troubleshoot Mode in Firefox to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).


Do a malware check with some malware scanning programs on the Windows computer.
You need to scan with all programs because each program detects different malware.
Make sure that you update each program to get the latest version of their databases before doing a scan.

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