# Shopware 5 Backend Loop

**URL:** <https://forum.shopware.com/t/shopware-5-backend-loop/91754>\
**Category:** Allgemein\
**Tags:** general, installation--gettin, administration\
**Created:** [1. Dezember 2021 um 15:39 UTC](https://forum.shopware.com/t/shopware-5-backend-loop/91754 "2021-12-01T15:39:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![FinnMac](https://avatars.discourse-cdn.com/v4/letter/f/8e7dd6/32.png) [@FinnMac](https://forum.shopware.com/u/FinnMac)\
**Post date:** [1. Dezember 2021 um 15:39 UTC](https://forum.shopware.com/t/shopware-5-backend-loop/91754/1 "2021-12-01T15:39:00Z")

</div>

I have installed, and re-installed Shopware 5 multiple times on my local machine, each time no errors appear and it seems to all go smoothly

But when I try and log-in in the backend, the page just reloads each time. The credentials are correct, as when I put in the wrong credentials, it tells me and prevents me from attempting to log-in.

The only thing close to an error that I can find is multiple instances of the following in the console:

_Uncaught TypeError: event.data.indexOf is not a function at i.onPostMessage (base?file=bootstrap&:16585) at g (ext-all.js:21)_

This means nothing to me, and I cannot find much about the issue online in relation to shopware 5. Has anyone dealt with this, or know what I might need to do to fix this issue?