@karthik palani, Thanks for posting in Q&A. From the log you provided, it mentioned the redirection to manage.microsoft.com, In fact, for some tasks, Intune requires unauthenticated proxy server access to manage.microsoft.com, And SSL traffic inspection is not supported for 'manage.microsoft.com', Please check if it meets in our environment.
Meanwhile, please ensure all IP addresses and port settings in the following link are all accessible.
Hope the above information can help.
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