Safari: FetchEvent.respondWith received an error

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Level 1

14 points

I have a Macbook Air (2017) running macos Big Sur V11.4.

On Safari, when trying to go to outlook.com, the following error is shown and the page cannot be refreshed:

Safari can’t open the page “https://outlook.office.com/mail/“. The error is: “FetchEvent.respondWith received an error: Returned response is null.”

(WebKitServiceWorker:0)

The error does not persist in Incognito mode, Chrome or any other browser. The internet connection is all good - it’s not that.

Ive trawled the internet to no avail. Please let me know of any possible fixes.

MacBook Air

Posted on Jul 1, 2021 1:52 PM

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Answer 1

Best reply

Level 10

83,916 points

On this Mac, site opens without any issue.

Go step by step and test.

1. Quit Safari, launch Safari holding the Shift key down.

Quote:

It also does a basic check of your startup disk, similar to using First Aid in Disk Utility.

And it deletes some system caches, including font caches and

the kernel cache, which are automatically created again as needed.

3. Clear History

Please read the article before clearing history,

this is like a low level resetting of Safari without affecting passwords and bookmarks.

4. If Safari doesn't open a webpage or isn’t working as expected

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