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Thorsten_Heit
April 14, 2026
Solved

1Password for Safari: excessive CPU usage

  • April 14, 2026
  • 2 replies
  • 143 views

From time to time the 1Password web extension in Safari drains my MacBook Pro's battery; according to the activity monitor it's then occupying 100% CPU (only one core? don't know). Unfortunately I cannot really tell exactly *when* this happens, but I *think* it's when my Mac goes to sleep, for example when I'm away or close the lid, Safari is still running, and I come back later.

Side effect:

When unlocking 1Password via the menu bar icon, the extension in Firefox is directly unlocked too, but the Safari extension keeps being locked; I manually have to click on the button to unlock it.

This keeps bugging me now for quite some time, and the only workaround I found so far is either deactivate and reactivate the extension in Safari settings or restart Safari.

Deinstalling and reinstalling the application didn't help as far as I could tell.

Has someone else seen this?

I'm using
* 1Password for Mac 8.12.10 (81210036)
* 1Password for Safari 8.12.10.36
* macOS 26.4.1
* MacBook Pro M2

Best answer by 1P_Gem

Hi @Thorsten_Heit, thanks for letting me know! I can see that we've received your email, and a member of the team will be in touch with you there as soon as possible.

2 replies

1P_Gem
1P_Gem
1Password Employee
April 14, 2026

Hi @Thorsten_Heit, thank you for reaching out to report this. Based on your description, it sounds as if you might be running into a couple of known issues, however I'd like to have our support team confirm this.

Could you reproduce the behaviour, and then create some diagnostics reports from both the extension and desktop app:

 

Attach the diagnostics to an email message addressed to: support@1password.com

With your email please include:

  • A link to this thread: https://www.1password.community/discussions/1password/1password-for-safari-excessive-cpu-usage/169372
  • Your forum username: Thorsten_Heit

 

You'll receive a reply with a Support ID number.  Please post that number here.  Thanks!

Issue=BEE-597 / Issue=DESK-50

T
Thorsten_HeitAuthor
April 14, 2026

Hi @1P_Gem,

thanks for your fast answer. The email was sent, support ticket ID is 570130.

D
dooku
April 30, 2026

Hi Thorsten, thank you for opening this discussion. I am also having the same issue. How was this solved? I see the case is marked as solved but there is no explanation on why this is happening and how to fix it.

1P_Gem
1P_GemAnswer
1Password Employee
April 14, 2026

Hi @Thorsten_Heit, thanks for letting me know! I can see that we've received your email, and a member of the team will be in touch with you there as soon as possible.

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