topic Re: 'Access-Control-Allow-Origin' in Custom Visuals Development Discussion

'Access-Control-Allow-Origin'

luojiandan_bi — Wed, 09 Jun 2021 06:46:50 GMT

I need to get data from url,but get error:

```javascript

Access to XMLHttpRequest at 'https://gallerybox.makeapie.com/asset/get/s/data-1592366734603-Z-iQwIHJk.json' from origin 'null' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

```

what's wrong with me?

Re: 'Access-Control-Allow-Origin'

dm-p — Thu, 10 Jun 2021 08:04:20 GMT

Hi @luojiandan_bi,

Visuals have their domain removed by the main window so that they are sandboxed. One of the effects of this is that if you're attending to load data from an external URL and this site does not allow requests from an empty domain, they are blocked by your browser. This is a common use case for creators in the HTML Content visual, so I've written up a short overview here. This section and the one below it on CORS are worth understanding if you're developing visuals in Power BI - plus the linked articles that detail it further - as these cannot be overcome through conventional means.

Regards,

Daniel

Re: 'Access-Control-Allow-Origin'

luojiandan_bi — Sun, 13 Jun 2021 14:17:17 GMT

@dm-p

thanks a lot,very useful replay.

Re: 'Access-Control-Allow-Origin'

abanafa — Mon, 09 May 2022 08:13:04 GMT

I'm having the same problem did you find a solution?