Hi. Thank you for your question and reaching out. I’d be more than happy to help you with your query
We have several users who's default browser and default PDF application change when the logon to the domain. I've checked our Group policies and we are not setting this. I've checked the logon script and we are not setting it. What else could be setting this? When I log in the browser sets back to Chrome, and the PDF sets back to Edge. Regardless of what I change them to after I logon.
It is possible that the default browser and PDF application settings are being changed by a third-party application or service. You can try using the Process Monitor tool to identify the process that is changing these settings. Additionally, you can try disabling third-party applications or services which may be changing these settings. Additionally, you can try disabling local or group policies which may be setting these settings. If none of these steps are successful, you may need to contact Microsoft Support to get assistance with troubleshooting the issue.
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