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changing Firefox themes on my Macbook

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I would like to change my Firefox theme. When I follow the steps to enable a new theme, my chosen theme appears on the screen. But when I close Firefox and then re-open it, my new theme appears briefly and then reverts back to the old theme. How can I fix this?

I would like to change my Firefox theme. When I follow the steps to enable a new theme, my chosen theme appears on the screen. But when I close Firefox and then re-open it, my new theme appears briefly and then reverts back to the old theme. How can I fix this?

被選擇的解決方法

Hi you can see if the suggestions on https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save work to fix your problem

greetings Tim Maks

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選擇的解決方法

Hi you can see if the suggestions on https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save work to fix your problem

greetings Tim Maks

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You can try "Clear the startup cache..." via the "Help -> More Troubleshooting Information" (about:support) page.

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Thanks for the helpful suggestions! My problem is fixed.