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Firefox slow to open first tab

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Firefox takes a very long time to open the first tab. After it opens, subsequent tabs open relatively quickly. I've tried self help suggestions like clearing cookies, cache and history, updating, even removing home page content. Nothing helps. It's getting intolerable and I end up switching to other browsers rather than sit and wait. Starting to even dread using firefox. Running Sonama 14.3.1 on my iMac. What else can I do?

Firefox takes a very long time to open the first tab. After it opens, subsequent tabs open relatively quickly. I've tried self help suggestions like clearing cookies, cache and history, updating, even removing home page content. Nothing helps. It's getting intolerable and I end up switching to other browsers rather than sit and wait. Starting to even dread using firefox. Running Sonama 14.3.1 on my iMac. What else can I do?

Chosen solution

  • Click the "Clear startup cache" button in about:support.
  • Reset system fonts to default in Font Book > Settings > Advanced > Reset.
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All Replies (2)

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Chosen Solution

  • Click the "Clear startup cache" button in about:support.
  • Reset system fonts to default in Font Book > Settings > Advanced > Reset.
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Thank you zeronight! It still did it in troubleshoot mode but after your next three steps, it seems the problem has been solved. The speed to open the first tab is greatly reduced. I appreciate your help. My proxy settings were not set to "use system proxy settings." They were set to automatic. Switched it to "no proxy" anyway. Cleared startup cache and reset system fonts to default.