Outlook error "Something unexpected went wrong with this url"

For the GPO to work correctly you need to use three forward slashes before the backslashes to establish the correct protocol.

This was in my example

i.e. for \myfileserver.internal you would use:

file:///\myfileserver.internal in the GPO

Trying to figure out the proper "trusted site" to add to GPO so users are able to open the following link:

\Companyname.sharepoint.com@ssl\DavWWWRoot\Sites\XYZ.Doc

Users are right clicking and dragging files from mapped SharePoint sites into the body of an Outlook msg and selecting "create hyperlink". This used to work until the latest update. I'm not sure if adding anything into the trusted site will even work for this scenerio. Anybody know? If so what is the actual site I need to put into the GPO. I have tried: file:///\companyname.sharepoint.com and that didn't work.

Ivan,

Here is the Known Issue article in case it can help, Outlook blocks opening FQDN and IP address hyperlinks after installing protections for Microsoft Outlook Security Feature Bypass Vulnerability released July 11, 2023 - Microsoft Support.

If you add the sites to Trusted Sites it will mitigate the error below:

However, even after adding to Trusted Sites the confirmation prompt will still occur and this is expected:

Hi,

Sorry for late answer. I am with MS Office Home and Business 2016 and update is also 2307.

I've checked with some other colleagues and they still have same problem.

I've done lot of changes in my local computer and I am not sure why it still prompt me to open local Intranet Links as I do not have site listed in Local Intranet or in Trusted Sites.

BR,

Ivan Cholakov

Hi Ivan,

What is your update version?

I just updated to version 2307, its still not improved.

BR,

Thank you Kelvin.

I knew the option with Registry also but it is little bit more complicated to setup correct sites there as you need to know the codes for every zone and put several keys. This is also some kind of workaround.

Today passed big update from Microsoft. In my computer I removed all local sites and restarted my computer.

After restart links are working with warning which is OK.

I need to verify it also with some user computers in order to confirm if it's the same with them.

BR,

Ivan Cholakov