rsnext/errors/multi-tabs.mdx

---
title: Multiple Tabs
---

## Why This Error Occurred

In development mode Next.js creates 2 persistent connections to the server to receive hot updates and to keep pages active. Each browser has their own limit for the number of concurrent connections to a specific server a site is allowed to have so if you open the same Next.js site in multiple tabs of the same browser you could exceed your browser's limit.

More info here: https://tools.ietf.org/html/rfc6202#section-5.1

## Possible Ways to Fix It

- Don't have too many tabs open to the same Next.js site open in development in the same browser at the same time.
- If using Firefox you can increase this limit by navigating to `about:config` and setting `network.http.max-persistent-connections-per-server` to a higher number
docs: Migrate error messages to MDX and App Router. (#52038) This PR is part of a larger effort to migrate error messages to MDX and use App Router: https://github.com/vercel/front/pull/23459 2023-07-05 15:11:16 +02:00			`---`
			`title: Multiple Tabs`
			`---`
Add warning on stalled page load possibly from too many tabs open (#6514) * Add warning on stalled page load possibly from too many tabs open * Add test for stalled warning * Update onDemand pinging to close on routeChangeStart and added warning when onDemand handler detects multiple tabs from the same browser 2019-03-02 23:51:14 +01:00
docs: Migrate error messages to MDX and App Router. (#52038) This PR is part of a larger effort to migrate error messages to MDX and use App Router: https://github.com/vercel/front/pull/23459 2023-07-05 15:11:16 +02:00			`## Why This Error Occurred`
Add warning on stalled page load possibly from too many tabs open (#6514) * Add warning on stalled page load possibly from too many tabs open * Add test for stalled warning * Update onDemand pinging to close on routeChangeStart and added warning when onDemand handler detects multiple tabs from the same browser 2019-03-02 23:51:14 +01:00
			`In development mode Next.js creates 2 persistent connections to the server to receive hot updates and to keep pages active. Each browser has their own limit for the number of concurrent connections to a specific server a site is allowed to have so if you open the same Next.js site in multiple tabs of the same browser you could exceed your browser's limit.`

			`More info here: https://tools.ietf.org/html/rfc6202#section-5.1`

docs: Migrate error messages to MDX and App Router. (#52038) This PR is part of a larger effort to migrate error messages to MDX and use App Router: https://github.com/vercel/front/pull/23459 2023-07-05 15:11:16 +02:00			`## Possible Ways to Fix It`
Add warning on stalled page load possibly from too many tabs open (#6514) * Add warning on stalled page load possibly from too many tabs open * Add test for stalled warning * Update onDemand pinging to close on routeChangeStart and added warning when onDemand handler detects multiple tabs from the same browser 2019-03-02 23:51:14 +01:00
Remove trailing spaces (#6547) ### changes #### remove trailing spaces When I was using example I noticed trailing spaces. So, this PR removes the trailing spaces of json file, README, and others. `examples/with-jest-typescript/src/modules/cars/Overview.tsx` also has it, but this time it did not change as tslint error occurs at commit. 2019-03-07 17:40:08 +01:00			`- Don't have too many tabs open to the same Next.js site open in development in the same browser at the same time.`
Add warning on stalled page load possibly from too many tabs open (#6514) * Add warning on stalled page load possibly from too many tabs open * Add test for stalled warning * Update onDemand pinging to close on routeChangeStart and added warning when onDemand handler detects multiple tabs from the same browser 2019-03-02 23:51:14 +01:00			- If using Firefox you can increase this limit by navigating to `about:config` and setting `network.http.max-persistent-connections-per-server` to a higher number