# Localhost domain (with subdomain and port) not reconised **URL:** \ **Category:** Technical Support\ **Tags:** pdfjs-express\ **Created:** [November 12, 2022, 10:12pm UTC](https://pdfjs.community/t/localhost-domain-with-subdomain-and-port-not-reconised/2162 "2022-11-12T22:12:44Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![kkim](https://avatars.discourse-cdn.com/v4/letter/k/3ab097/32.png) [@kkim](https://pdfjs.community/u/kkim)\ **Post date:** [November 14, 2022, 3:54pm UTC](https://pdfjs.community/t/localhost-domain-with-subdomain-and-port-not-reconised/2162/3 "2022-11-14T15:54:09Z")
Hi there, Thank you for contacting pdf.js express forums, Can you confirm you have the correct package installed? PDF.js express and PDF.js express Viewer are separate products with different license keys. Please make sure you are using the right product for your license key. If you still have issues, please try without the port as explained by this forum post: > [@Local domain + port; licenseKey not recognised](https://pdfjs.community/t/local-domain-port-licensekey-not-recognised/2007/6): > > @zserviss To be clear: we’re talking about the .local part of the URL? Is this something you ever intend supporting? What domains are supported then? It seems a little odd you would even check if a domain is valid or not - why would pdfexpress care if domain.local is a real domain or not? It’s just a proxy back to localhost (thanks to /etc/hosts) Unfortunately this means we will not be able to use pdf.jsexpress given we won’t be able to properly develop with it. Seems like an oversight that it … Best regards, Kevin Kim Share how you are using PDF.js Express in your organization you could win a **$500 Amazon gift card. All participants will receive 6 months of PDF.js Express+ for free**. Learn more [here](https://utm.guru/ueQNw) --- _[View the full topic](https://pdfjs.community/t/localhost-domain-with-subdomain-and-port-not-reconised/2162)._