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Firefox prevents my Windows 10 to Sleep

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I am using FF 66.0.3 on Windows 10. When the browser is open, windows CAN NOT SLEEP. Tried this several times (of course nothing downloading). This is happening with earlier versions too.

I am using FF 66.0.3 on Windows 10. When the browser is open, windows CAN NOT SLEEP. Tried this several times (of course nothing downloading). This is happening with earlier versions too.
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  • User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:66.0) Gecko/20100101 Firefox/66.0

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Wesley Branton
  • Top 10 Contributor
555 solutions 4773 answers

I frequently put Windows 10 to sleep with Firefox open and have no issues.

Try it will running Firefox Safe Mode. It's possible that an extension is trying to keep Windows awake.

If that doesn't help, try doing it with only 1 tab open to the new tab page.

I frequently put Windows 10 to sleep with Firefox open and have no issues. Try it will running [[Troubleshoot Firefox issues using Safe Mode|Firefox Safe Mode]]. It's possible that an extension is trying to keep Windows awake. If that doesn't help, try doing it with only 1 tab open to the new tab page.
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Question owner

I can put my windows to sleep. What does not function properly is "timed sleep".

I can put my windows to sleep. What does not function properly is "timed sleep".
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WestEnd
  • Top 25 Contributor
61 solutions 5303 answers

ApolloAsPy said

I can put my windows to sleep. What does not function properly is "timed sleep".

That sounds like a Windows Power management issue.

''ApolloAsPy [[#answer-1214135|said]]'' <blockquote> I can put my windows to sleep. What does not function properly is "timed sleep". </blockquote> That sounds like a Windows Power management issue.
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Question owner

I tired several fixes. Again, if FF is opne, NO SLEEP, if i close the browser, my PC goes to sleep after a while. Thanks for the effort, but until now no solution :-(

I tired several fixes. Again, if FF is opne, NO SLEEP, if i close the browser, my PC goes to sleep after a while. Thanks for the effort, but until now no solution :-(
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WestEnd
  • Top 25 Contributor
61 solutions 5303 answers

What fixes did you try? If the computer can go to sleep after the browser is close that would mean there is something installed in the browser that is telling the power management to stay "on". And that could range from Addons problem or malware acting addon telling the power management to stay "on". I can leave mine one with FF, Chrome with sessions loaded in each and within the Power management it will put the computer to sleep.

What fixes did you try? If the computer can go to sleep after the browser is close that would mean there is something installed in the browser that is telling the power management to stay "on". And that could range from Addons problem or malware acting addon telling the power management to stay "on". I can leave mine one with FF, Chrome with sessions loaded in each and within the Power management it will put the computer to sleep.

Modified by WestEnd

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Question owner

WestEnd said

What fixes did you try? If the computer can go to sleep after the browser is close that would mean there is something installed in the browser that is telling the power management to stay "on". And that could range from Addons problem or malware acting addon telling the power management to stay "on". I can leave mine one with FF, Chrome with sessions loaded in each and within the Power management it will put the computer to sleep.

Well, how to find that? Hahaha, I am doomed ;.P

''WestEnd [[#answer-1214533|said]]'' <blockquote> What fixes did you try? If the computer can go to sleep after the browser is close that would mean there is something installed in the browser that is telling the power management to stay "on". And that could range from Addons problem or malware acting addon telling the power management to stay "on". I can leave mine one with FF, Chrome with sessions loaded in each and within the Power management it will put the computer to sleep. </blockquote> Well, how to find that? Hahaha, I am doomed ;.P
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