Siebel System Admin, Install and Upgrade (MOSC)

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ForcePoint Data Loss Prevention Browser Extension can cause /siebel/ 404 errors

edited Aug 5, 2025 10:12PM in Siebel System Admin, Install and Upgrade (MOSC) 1 comment

Hi All,

Posting this here since it took a very large team a long time to figure out and could be an issue for other customers.

Production users were getting several hundred /siebel/ 404 errors each day which kicked the users out of their Siebel session. Oracle Support asked for a HAR file which I also took a look at.

As it turns that the network tab in developer tools has a column called initiator which is the thing/person/script that triggered the HTTP request. We noticed the initiator had a strange value that was different from all the other initiator values in the HAR file.

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