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Netflix not working. asks to install silverlight.

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My Teenager made some changes to Firefox settings to do some Roblox stuff. I dont know what she did and she is not sure either. since then, I cannot use Netflix. If I try to view a movie, then i get a page asking to install HTML5 or the silverlight plugin I have tried doing all the suggested workarounds but nothing works I have Chrome as a backup browser, and Netflix runs OK on chrome. I prefer to have everything on firefox as, - up to now - it does everything i want or need any advice please

Windows 10, laptop, FireFox version 90.0.2 (showing up-to-date)

My Teenager made some changes to Firefox settings to do some Roblox stuff. I dont know what she did and she is not sure either. since then, I cannot use Netflix. If I try to view a movie, then i get a page asking to install HTML5 or the silverlight plugin I have tried doing all the suggested workarounds but nothing works I have Chrome as a backup browser, and Netflix runs OK on chrome. I prefer to have everything on firefox as, - up to now - it does everything i want or need any advice please Windows 10, laptop, FireFox version 90.0.2 (showing up-to-date)

Isisombululo esikhethiwe

This article may help or contain a helpful link relating to user agent (if that is the issue): https://support.mozilla.org/en-US/kb/how-reset-default-user-agent-firefox

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HI, this Roblox stuff has changed your useragent, so Netflix can't recognize the browser. Please reset your UA to the default version.

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Isisombululo Esikhethiwe

This article may help or contain a helpful link relating to user agent (if that is the issue): https://support.mozilla.org/en-US/kb/how-reset-default-user-agent-firefox

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Thank you for your help. Roblox had, indeed, put some extra stuff into my useragent. I had no idea what useragent was but, I followed the link from TerryN21 and was able to follow the advice there without too much difficulty. Firefox is back working correctly with Netflix. cheers