# Changing mfe host url

**URL:** <https://discuss.openedx.org/t/changing-mfe-host-url/8459>\
**Category:** Development\
**Tags:** tutor\
**Created:** [October 9, 2022, 2:22am UTC](https://discuss.openedx.org/t/changing-mfe-host-url/8459 "2022-10-09T02:22:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![tomg10](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.openedx.org/tomg10/32/1928_2.png) [@tomg10](https://discuss.openedx.org/u/tomg10)\
**Post date:** [October 9, 2022, 2:22am UTC](https://discuss.openedx.org/t/changing-mfe-host-url/8459/1 "2022-10-09T02:22:28Z")

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Hello everyone

I have tried to change mfe host url from apps.lms.domain to apps.domain  
(because cloudflare does not support subdomain of subdomain)  
but now I get this error  
An unexpected error occurred. Please click the button below to refresh the page.

could anybody please help me?

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**Author:** ![braden](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.openedx.org/braden/32/46_2.png) [@braden](https://discuss.openedx.org/u/braden)\
**Post date:** [October 12, 2022, 10:59pm UTC](https://discuss.openedx.org/t/changing-mfe-host-url/8459/2 "2022-10-12T22:59:26Z")

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Hi @tomg10,

We will need a lot more information to be able to help you debug the issue. The error message you describe just sounds like the message shown to users in the UI. You’ll need to check the browser console to find the full error details. Please post those here and we’ll see if we can help.

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**Author:** ![Zachary\_Trabookis](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.openedx.org/zachary_trabookis/32/753_2.png) [@Zachary\_Trabookis](https://discuss.openedx.org/u/Zachary_Trabookis)\
**Post date:** [October 22, 2022, 4:51am UTC](https://discuss.openedx.org/t/changing-mfe-host-url/8459/3 "2022-10-22T04:51:04Z")

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@tomg10 @braden

So I ran into a similar situation and ended up posting my particular solution here. Maybe this is related to what you’re going through. Anyway hope this helps.

> [@Tutor mfe plugin fresh startup error](https://discuss.openedx.org/t/tutor-mfe-plugin-fresh-startup-error/8104/9):
>
> So I was able to get the MFE to load with the following configuration settings. I didn’t have the {cms|lms}-env tutor patches overridden and that was the issue. As @ghassan mentions [here](https://discuss.openedx.org/t/tutor-mfe-plugin-fresh-startup-error/8104/7) I used the .{{ BASE\_DOMAIN}} for the SESSION\_COOKIE\_DOMAIN value along with the same SESSION\_COOKIE\_NAME to allow the session to work across both the CMS and LMS applications. "BASE\_DOMAIN": "example.com" Tutor Plugin Patches cms-env lms-env "SESSION\_COOKIE\_DOMAIN": ".{{ BASE\_DOMAIN }}", openedx-cms-produc…