# Getting Agent unreachable error **URL:** \ **Category:** Help me!\ **Created:** [November 6, 2025, 7:36am UTC](https://community.forestadmin.com/t/getting-agent-unreachable-error/8343 "2025-11-06T07:36:10Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Naresh](https://dub1.discourse-cdn.com/flex013/user_avatar/community.forestadmin.com/naresh/32/3713_2.png) [@Naresh](https://community.forestadmin.com/u/Naresh)\ **Post date:** [November 6, 2025, 7:36am UTC](https://community.forestadmin.com/t/getting-agent-unreachable-error/8343/1 "2025-11-06T07:36:10Z")
Getting Agent unreachable error ![Screenshot 2025-11-06 at 12.58.36 PM](https://europe1.discourse-cdn.com/flex013/uploads/forest/original/2X/8/8efd89e432465feef6c2cbf7c314235b5780f5ff.jpeg) ## Feature(s) impacted Many users are not able to to load the forest admin due to this error. Some users are able to login the FA successfully. ## Observed behavior In the network tab getting CORS error in the authentication request ## Expected behavior All user should be able to login the FA and able to see the data. ## Failure Logs Getting CORS error ![image (9)](https://europe1.discourse-cdn.com/flex013/uploads/forest/original/2X/6/6c4e63a75986b6b3825277edbe786fe184d63e42.png) ## Context Project name: Curator Team name: Developer Environment name: ALL (Staging, Development, Production) Agent type & version: Package Version: 9.3.5 (forest-express-sequelize) Express Version: 4.20.0 Sequelize Version: 6.30.0 Database Dialect: MySql - Project name: … - Team name: … - Environment name: … - Database type: … - Recent changes made on your end if any: … **And, if you are self-hosting your agent:** - Agent technology: (nodejs, php, ruby, python) - Agent (forest package) name & version (from your .lock file): … ---
**Author:** ![matthv](https://dub1.discourse-cdn.com/flex013/user_avatar/community.forestadmin.com/matthv/32/3269_2.png) [@matthv](https://community.forestadmin.com/u/matthv)\ **Post date:** [November 6, 2025, 9:12am UTC](https://community.forestadmin.com/t/getting-agent-unreachable-error/8343/2 "2025-11-06T09:12:45Z")
Hello @Naresh and welcome to the community ! Could you please share the following: - the logs from your agent as you are trying to connect on forest - in the network tab does the CORS preflight request receive a response? Additionally can you try running a curl to your agent ? `curl -v [your-agent-endpoint]/forest` ---
**Author:** ![matthv](https://dub1.discourse-cdn.com/flex013/user_avatar/community.forestadmin.com/matthv/32/3269_2.png) [@matthv](https://community.forestadmin.com/u/matthv)\ **Post date:** [November 6, 2025, 1:25pm UTC](https://community.forestadmin.com/t/getting-agent-unreachable-error/8343/4 "2025-11-06T13:25:08Z")
The issue is most likely happening upstream of your agent. Could you check your nginx/reverse proxy configuration to ensure that: - OPTIONS requests are properly allowed - CORS headers (Access-Control-\*) are not being filtered Could you check your proxy logs to see if the OPTIONS requests are reaching the proxy and what’s happening to them? ---
**Author:** ![Nilesh](https://avatars.discourse-cdn.com/v4/letter/n/f475e1/32.png) [@Nilesh](https://community.forestadmin.com/u/Nilesh)\ **Post date:** [November 6, 2025, 2:55pm UTC](https://community.forestadmin.com/t/getting-agent-unreachable-error/8343/5 "2025-11-06T14:55:46Z")
@Matthv This is even happening for local environment where is it trying to reach localhost:. Request is not reaching to server and even preflight request is failing. ---
**Author:** ![matthv](https://dub1.discourse-cdn.com/flex013/user_avatar/community.forestadmin.com/matthv/32/3269_2.png) [@matthv](https://community.forestadmin.com/u/matthv)\ **Post date:** [November 6, 2025, 3:39pm UTC](https://community.forestadmin.com/t/getting-agent-unreachable-error/8343/6 "2025-11-06T15:39:40Z")
Hello @Nilesh, thanks for the update. Recent Chrome/Chromium versions require explicit user permission for a remote site. Can you look if you have given the local network access permission to [app.forestadmin.com](http://app.forestadmin.com/) ? [New permission prompt for Local Network Access  |  Blog  |  Chrome for Developers](https://developer.chrome.com/blog/local-network-access) Please also try loading Forest Admin: - in private navigation with all extension disabled - on another browser To definitively check if your agent is reachable locally and responding correctly, could you try to execute the following command `curl -i -X OPTIONS -H "Origin: https://app.forestadmin.com" -H "Access-Control-Request-Method: GET" http://127.0.0.1:PORT/forest` ---
**Author:** ![Nilesh](https://avatars.discourse-cdn.com/v4/letter/n/f475e1/32.png) [@Nilesh](https://community.forestadmin.com/u/Nilesh)\ **Post date:** [November 6, 2025, 4:11pm UTC](https://community.forestadmin.com/t/getting-agent-unreachable-error/8343/7 "2025-11-06T16:11:47Z")
@matthv Thank you. Permissioning local area connection helped resolve issue with Local Environment. @Naresh Can you verify if this resolved issue with other environments as well. ---
**Author:** ![Naresh](https://dub1.discourse-cdn.com/flex013/user_avatar/community.forestadmin.com/naresh/32/3713_2.png) [@Naresh](https://community.forestadmin.com/u/Naresh)\ **Post date:** [November 7, 2025, 5:49am UTC](https://community.forestadmin.com/t/getting-agent-unreachable-error/8343/8 "2025-11-07T05:49:48Z")
HI @Nilesh @matthv I have confirm with the users who were facing the issue. After granting the permission to local network, all envs are working as expected. Thanks.