User Agent node-fetch/1.0

Question

User Agent node-fetch/1.0

MavridesChristopher-4078 20

I noticed the following user agent is used in high volume when reviewing non interative sign in logs. I found some references on the net on how this is part of some Microsoft backend, but is there any official MS documentation on why I see so much of this user agent, node-fetch/1.0

Surya Prakash Kotte 2,950 Reputation points Microsoft External Staff Moderator

2025-05-30T08:43:01.9466667+00:00

Hello @MavridesChristopher-4078

Node-fetch/1.0 is a user agent you might see in your non-interactive sign-in logs. It comes from the node-fetch library, which is a tool used in Node.js (a type of server-side JavaScript) to make web requests,similar to how browsers fetch data from websites.

There isn’t official Microsoft documentation that explains why you might see a lot of node-fetch/1.0 entries, but it usually means that some background process or service in your system is using Node.js with node-fetch to connect to other services or APIs.

I hope this information is helpful. If not, please let me know—I'd be happy to help further.
MavridesChristopher-4078 20 Reputation points

2025-05-30T13:28:32.0566667+00:00

Thanks. Any bit of information helps but I am still looking for a bit more. The activity I am observing is such at a high volume and accessing things like email and I am not convinced this is somehow now a routine part of MS servcies. I dont use anything special to access webmail per se and this activity shows up in my logs. I would like to know what exactly is causing the usage of this agent.
Surya Prakash Kotte 2,950 Reputation points Microsoft External Staff Moderator

2025-06-04T20:07:58.55+00:00

Hello @MavridesChristopher-4078

I would like to check this up offline with you to understand the scenario better. Please share your contact details over private message and your availability for a call.
MavridesChristopher-4078 20 Reputation points

2025-06-10T18:24:02.5533333+00:00

Capture1.JPGSee the attached file as a sample, every single one of the entries in the aggregate group have the user agent, node-fetch/1.0 (+https://github.com/bitinn/node-fetch)

Your answer

Surya Prakash Kotte 2,950 Reputation points Microsoft External Staff Moderator

2025-05-30T08:43:01.9466667+00:00

Hello @MavridesChristopher-4078

Node-fetch/1.0 is a user agent you might see in your non-interactive sign-in logs. It comes from the node-fetch library, which is a tool used in Node.js (a type of server-side JavaScript) to make web requests,similar to how browsers fetch data from websites.

There isn’t official Microsoft documentation that explains why you might see a lot of node-fetch/1.0 entries, but it usually means that some background process or service in your system is using Node.js with node-fetch to connect to other services or APIs.

I hope this information is helpful. If not, please let me know—I'd be happy to help further.
MavridesChristopher-4078 20 Reputation points

2025-05-30T13:28:32.0566667+00:00

Thanks. Any bit of information helps but I am still looking for a bit more. The activity I am observing is such at a high volume and accessing things like email and I am not convinced this is somehow now a routine part of MS servcies. I dont use anything special to access webmail per se and this activity shows up in my logs. I would like to know what exactly is causing the usage of this agent.
Surya Prakash Kotte 2,950 Reputation points Microsoft External Staff Moderator

2025-06-04T20:07:58.55+00:00

Hello @MavridesChristopher-4078

I would like to check this up offline with you to understand the scenario better. Please share your contact details over private message and your availability for a call.
MavridesChristopher-4078 20 Reputation points

2025-06-10T18:24:02.5533333+00:00

Capture1.JPGSee the attached file as a sample, every single one of the entries in the aggregate group have the user agent, node-fetch/1.0 (+https://github.com/bitinn/node-fetch)

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User Agent node-fetch/1.0

Your answer