Hi @Technomage
From edge://policy/, it shows you set InPrivateModeAvailability to 1 under computer configuration and set InPrivateModeAvailability to 0 under user configuration, that's why it shows conflict. For the error "Error writing the value's new contents", it may be caused by you don't have full permission to edit registry settings.
You can try the following two methods:
- In the group policy management editor, set the policy to 0 under Computer Configuration.
- If using group policy management editor doesn't work, you can run Registry Editor as administrator, then edit the registry setting. You can also refer to this answer to check if you have full permission to edit registry keys.
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Regards,
Yu Zhou