Knowledgebase
Certificate Error for Users accessing Proofpoint Essentials user interface when running Windows XP and Internet Explorer.
Problem:
Users who are running Windows XP and using Internet Explorer to access the Proofpoint Essentials user interface may get a certificate error. This is due to known incompatibilities between Windows XP/Internet Explorer and Proofpoint’s web server configuration. Solution:
Users can ignore the certificate error and proceed to access the user interface. Alternatively they can use another browser.
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