Overview
As of January 20, 2021, we have received customer reports of users experiencing "401 access denied" errors when clicking Time-of-click links in emails.
If you are experiencing this issue, please raise a support case, attach the affected email as a sample (in RFC822 /.eml format), and mention the ID XGE-18542.
Workaround 1
Get the original URL if the rewritten email cannot be resent.
- Copy-paste the rewritten URL in Notepad++.
- Select everything after
&u=up to the next&sign. This usually ends with - Right-click the selected text > Plugin commands > Base64 Decode.
- Copy-paste the selected text into a URL decoder to get the real link.
Note: Be careful when opening the decoded URL as it could be malicious. Try opening the link for trusted emails.
Workaround 2
If the email can be resent from a trusted sender and the issue occurs for every email from them, the URL can be added to the URL allow list temporarily. To do this, go to Global Settings > URL allow list.
Related information
Time-of-click feature information: docs.sophos.com/.../eg_EmailToCsummary.html
KB: https://support.sophos.com/support/s/article/KB-000040928?language=en_US
Added tags
[edited by: Raphael Alganes at 1:17 AM (GMT -7) on 8 Jun 2023]