Error code
Sophos All models code ISH-1131
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Meaning
By default, Outlook's built-in security blocks images from unknown senders, which affects Sophos Phish Threat simulation emails. Campaign images may not display automatically when recipients open emails, requiring a manual "Download Images" action. Since Sophos Phish Threat uses hidden images to track email opens, blocked images prevent the platform from accurately recording when users open simulation emails, resulting in lower or inaccurate open-rate statistics. This behavior is expected due to Outlook's default security settings, designed to protect users from potentially unsafe content
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Address of this page: https://www.remfixit.com/tr/sophos/tum-modeller/ish1131