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Firefox freezes during start in Windows 11

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When I click on Firefox From Start Menu in Windows, It opens and stays unresponsive for few seconds.

When I click on Firefox From Start Menu in Windows, It opens and stays unresponsive for few seconds.

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May I know what Anti-Virus application do you use? (eg: Avast, Bitdefender, Windows Defender....) I had the same problem after I uninstalled a security product.