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Hyperlinks not working in Outlook

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I cannot open hyperlinks in Outlook. When I click a hyperlink, a new tab opens in Firefox, but times out. On my mobile device I get the following message after clicking a hyperlink: https://na01.safelinks.protection.outlook.com

This started occurring after the latest update, but after reviewing the support logs, I see this is not a new issue.

I have not yet seen a workable solution. Thank you in advance!

I cannot open hyperlinks in Outlook. When I click a hyperlink, a new tab opens in Firefox, but times out. On my mobile device I get the following message after clicking a hyperlink: https://na01.safelinks.protection.outlook.com This started occurring after the latest update, but after reviewing the support logs, I see this is not a new issue. I have not yet seen a workable solution. Thank you in advance!

Alle svar (1)

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There should be a lot more characters after that base "safelinks" address. Maybe you removed that for privacy when posting here? If it is actually missing, I wonder whether an anti-tracking add-on might be removing it.


Since this problem just started recently:

Firefox recently rolled out "Total Cookie Protection" to more users. This limits how sites can use "third party" cookies, meaning cookies from different websites than the one you see in the address bar. Since Microsoft uses numerous different servers for sign-in, your Inbox, and those outbound links, it's possible there is an authentication failure in this case.

You can make exceptions to this feature when needed. More info in the following articles:


Also, "just in case", make sure the redirect block is turned off:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk. (This on your Mac only, not for mobile.)

(2) In the search box in the page, type or paste accessibility.blockautorefresh and pause while the list is filtered

(3) If the preference has a value of true, double-click it to restore the default value of false