# Licence key not working with version 8.2

**URL:** <https://pdfjs.community/t/licence-key-not-working-with-version-8-2/1310>\
**Category:** Technical Support\
**Created:** [January 19, 2022, 9:25am UTC](https://pdfjs.community/t/licence-key-not-working-with-version-8-2/1310 "2022-01-19T09:25:43Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![Logan](https://yyz1.discourse-cdn.com/flex031/user_avatar/pdfjs.community/logan/32/13_2.png) [@Logan](https://pdfjs.community/u/Logan)\
**Post date:** [January 20, 2022, 8:50pm UTC](https://pdfjs.community/t/licence-key-not-working-with-version-8-2/1310/8 "2022-01-20T20:50:18Z")

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Hey there,

It looks like the WASM module we use is being served with an incorrect content type.

On your servers the WASM module content is mangled:

![image](https://canada1.discourse-cdn.com/flex031/uploads/pdfjscommunity/original/1X/e735a6730ab66a3c6a4924646bf1603f8af03738.png)

But it should look like so:

 ![image](https://canada1.discourse-cdn.com/flex031/uploads/pdfjscommunity/original/1X/19d9e3f014db38c60f25dc46fdcf0bf7a05a0687.png)

Please make sure your server is set up to properly serve WASM modules.

I can also confirm that there is no build issue with 8.2.0. I am testing your license key on my own server and everything is working fine.

Thanks,  
Logan

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