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In my sign-in logs, I noticed the IP address 127.0.0.1. What is the meaning of this IP address, and why is it showing up in my logs?
I wanted to check in and see if you had any other questions or if you were able to resolve this issue?
If you have any other questions, please let me know. Thank you for your time and patience throughout this issue.
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The IP address 127.0.0.1 is called the loopback address and is used by a computer to refer to itself. It is also known as localhost. When a server is running on your local PC, it will be accessible at 127.0.0.1. This IP address is reserved for loopback purposes and is not used to communicate with other devices like a real IP address.
It is possible that you are seeing this IP address in your sign-in logs because your device is trying to connect to a service running on your local machine.
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Hi Jarvis,
You stated "It is possible that you are seeing this IP address in your sign-in logs because your device is trying to connect to a service running on your local machine.", this ip is found in non-interactive sign-ins and user signing in Exchange online service. can you please clarify in details?
Hi @Jean Paul Nkundabose , thanks for your reply.
If convenient, could you please provide more detailed information about the IP in the sign-in logs?
Based on my experience, this could happen if you are running a local server or if you are using a VPN.
Not sure what other details you need. As you stated it is loop back IP associated with user’s computer. The question is “how come this IP show in sign-ins logs instead of the real IP?
I don't see any127 address in my environment, so can you provide a screenshot? Does it address appear a lot, and are you using any proxy software?