# How to rename localhost

**URL:** <https://forums.rocket.chat/t/how-to-rename-localhost/11491>\
**Category:** Guides\
**Created:** [June 26, 2021, 8:23pm UTC](https://forums.rocket.chat/t/how-to-rename-localhost/11491 "2021-06-26T20:23:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![RedFox](https://avatars.discourse-cdn.com/v4/letter/r/f1d935/32.png) [@RedFox](https://forums.rocket.chat/u/RedFox)\
**Post date:** [June 26, 2021, 8:23pm UTC](https://forums.rocket.chat/t/how-to-rename-localhost/11491/1 "2021-06-26T20:23:17Z")

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Files don’t open in chat. The browser displays an error: [http://localhost:3000/file-upload/L2Yg9xkAJ7uWKPpWu/Новый%20точечный%20рисунок.bmp?download](http://localhost:3000/file-upload/L2Yg9xkAJ7uWKPpWu/%D0%9D%D0%BE%D0%B2%D1%8B%D0%B9%20%D1%82%D0%BE%D1%87%D0%B5%D1%87%D0%BD%D1%8B%D0%B9%20%D1%80%D0%B8%D1%81%D1%83%D0%BD%D0%BE%D0%BA.bmp?download) #22473

how to treat?

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**Author:** ![john.crisp](https://sea1.discourse-cdn.com/flex021/user_avatar/forums.rocket.chat/john.crisp/32/2711_2.png) [@john.crisp](https://forums.rocket.chat/u/john.crisp)\
**Post date:** [June 28, 2021, 12:29pm UTC](https://forums.rocket.chat/t/how-to-rename-localhost/11491/2 "2021-06-28T12:29:25Z")

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Hi.

Please don’t keep opening github issues. Github is for proven bugs in Rocket.Chat, not support questions.

Your server setup from github for reference:

### Server Setup Information:

- Version of Rocket.Chat Server: 3.15
- Operating System: linu
- Deployment Method:
- Number of Running Instances:
- DB Replicaset Oplog:
- NodeJS Version: 12.18.4 -x64
- MongoDB Version: 4.0.2

Please make sure you read all the documentation:

> **[Rocket-Chat Documentation](https://docs.rocket.chat/)**

You really should run a reverse proxy with certificates.