# WebDev Module: 404 Not Found when accessing HTML via Mounted Folder
**URL:** \
**Category:** Ignition\
**Created:** [January 21, 2026, 1:50am UTC](https://forum.inductiveautomation.com/t/webdev-module-404-not-found-when-accessing-html-via-mounted-folder/113432 "2026-01-21T01:50:35Z")\
**Posts on this page:** 1\
**Showing post:** 2
**Author:**  [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [January 21, 2026, 2:05am UTC](https://forum.inductiveautomation.com/t/webdev-module-404-not-found-when-accessing-html-via-mounted-folder/113432/2 "2026-01-21T02:05:30Z")
Your mounted folder path appears to not be physically in the gateway machine, but in a network share. In Windows, by default, the account running the background service cannot access network shares.
There are numerous discussions on this forum about using UNC paths combined with a custom background user account, like this one:
> [@Gateway scripts cannot access to mapped drives](https://forum.inductiveautomation.com/t/gateway-scripts-cannot-access-to-mapped-drives/78213/6):
>
> Yes and no. That is the simple solution, but it is not robust. If a network share is not available when Ignition starts up, that mapped drive letter will not be available later. It doesn't fix itself. The proper answer is to not use mapped drives. AT ALL. Use UNC paths directly to the network resource wherever you would have used a mapped drive. For this to work properly, you need to change the user account under which Ignition runs to an account that has the necessary privileges on your…
But it is more robutst to simply place the files directly in the gateway filesystem.
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_[View the full topic](https://forum.inductiveautomation.com/t/webdev-module-404-not-found-when-accessing-html-via-mounted-folder/113432)._