# mappView Multi-Client test setup solution

**URL:** <https://community.br-automation.com/t/mappview-multi-client-test-setup-solution/8865>\
**Category:** How-To & Wikis\
**Tags:** mapp-view\
**Created:** [October 31, 2025, 9:22pm UTC](https://community.br-automation.com/t/mappview-multi-client-test-setup-solution/8865 "2025-10-31T21:22:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![marcel.voigt](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/marcel.voigt/32/97_2.png) [@marcel.voigt](https://community.br-automation.com/u/marcel.voigt)\
**Post date:** [October 31, 2025, 9:22pm UTC](https://community.br-automation.com/t/mappview-multi-client-test-setup-solution/8865/1 "2025-10-31T21:22:28Z")

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This is a potentially useful solution for people working with multi-client setups and trying to test it without assembling and setting up 5 or more physical mappView clients.

When connecting to a mappView server you can only do so from the same client once or using incognito mode you can connect a second time. Any other connection attempts results in this warning.

 ![image](https://europe1.discourse-cdn.com/brcommunity/original/2X/2/2165dcd25084647c19c02c66b719018ab05491f2.png)

But by starting multiple Chrome instances all with their own _- -user-data-dir =_ it is possible to create as many client connections as you need for testing!

Here is a simple PowerShell script to launch 5 clients connecting to the same 127.0.0.1:81 and they all act as a separate clients in the eyes of the mappView server, ideal for testing multi-client setups.

```shell
#Launch 5 mappView clients

1..5 | ForEach-Object {
Start-Process chrome.exe -ArgumentList “–user-data-dir=C:\temp\chrome$_”, “http://127.0.0.1:81/”
}

```

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<div class="post-metadata">

**Author:** ![kovarj](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/kovarj/32/537_2.png) [@kovarj](https://community.br-automation.com/u/kovarj)\
**Post date:** [November 1, 2025, 1:11pm UTC](https://community.br-automation.com/t/mappview-multi-client-test-setup-solution/8865/2 "2025-11-01T13:11:21Z")

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interesting, I have to try it 🙂

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**Author:** ![frank.zapf](https://avatars.discourse-cdn.com/v4/letter/f/FF8800/32.png) [@frank.zapf](https://community.br-automation.com/u/frank.zapf)\
**Post date:** [November 6, 2025, 8:19am UTC](https://community.br-automation.com/t/mappview-multi-client-test-setup-solution/8865/3 "2025-11-06T08:19:36Z")

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This is a smart solution! In the past I used multible copies of chromium portable for multible instances.