---
title: "When running 'aspnet_regiis -c' still doesn't fix it..."
url: "https://osherove.com/blog/2003/10/6/when-running-aspnet_regiis-c-still-doesnt-fix-it.md"
canonical: "https://osherove.com/blog/2003/10/6/when-running-aspnet_regiis-c-still-doesnt-fix-it.html"
published: "2003-10-06T00:14:00"
updated: "2003-10-06T00:14:00"
tags: [".Net Original"]
author: "Roy Osherove"
description: "If you ever find yourself with this error: “ Unable to find script library '/aspnet_client/system_web/1_1_4322/WebUIValidation.js'. Try placing this file manually, or reinstall by running 'aspnet_regiis -c'.” and you've…"
usage: "Licensed under CC BY 4.0 — reuse, quote and adapt with attribution (Roy Osherove, link to the original page)."
license: "https://creativecommons.org/licenses/by/4.0/"
---

# When running 'aspnet\_regiis -c' still doesn't fix it...

By Roy Osherove October 6, 2003 In [.Net Original](https://osherove.com/blog/category/net-original)

**Historical article** · Originally published October 6, 2003; technical details may be outdated.

If you ever find yourself with this error:

“_Unable to find script library '/aspnet\_client/system\_web/1\_1\_4322/WebUIValidation.js'. Try placing this file manually, or reinstall by running 'aspnet\_regiis -c'.”_

and you've already ran _aspnet\_regiis_ but it still shows the error, try this:

_“This problem most often occurs when you are also running virtual directory and the site you are hitting has a virtual directory redirect set for it. To fix this, copy the aspnet\_client folder structure from the root of your account into the [website](http://itxt.vibrantmedia.com/al.asp?ipid=112&cc=us&di=64485&ts=2465938&redir=http://www5.overture.com/d/sr/?xargs=02u3hs9yoaj1UPPzCCxBSKv0dTbXy0oQdDNKVzYSdwagXCQoUf8oKt7cTF8vi7tv3c%2BW5bD7dNp9iCrQ7L2m5YjgiARMlACJOV1RgQkmgClJXaoIALZi6DcuSdVtrVvrb1TWnq%2BXK7P5nY31mb9zplQ1MKM6XhRusUnPis7HA4DmOkCfcptbHGGSHh1ueD2QqnlNs5JrmhJOKZSdlI0D4fq7fX2uFW9jhCQc2aY0zwVyGp3MasQ2ZxcxiROKIREm9jop%2BtUA%3D%3D)'s subfolder (as listed in the Vitrual Director mappings).“_

\[taken from [here](http://forums.aspfree.com/archive/11/2003/08/3/17772).\]

It certainly saved the day for me!

## More in .Net Original

[All posts in .Net Original](https://osherove.com/blog/category/net-original)

- Oct 8, 2003

    ### [Introducing SiteFeeder](https://osherove.com/blog/2003/10/8/introducing-sitefeeder.html)

- Oct 7, 2003

    ### [\[Tip\]:MemoryStream.GetBuffer() vs. MemoryStream.ToArray()](https://osherove.com/blog/2003/10/7/tipmemorystreamgetbuffer-vs-memorystreamtoarray.html)

- Oct 5, 2003

    ### [Fun with NUnit - clarification](https://osherove.com/blog/2003/10/5/fun-with-nunit-clarification.html)

- Sep 30, 2003

    ### [See you at the Israel .Net user group tomorrow!](https://osherove.com/blog/2003/9/30/see-you-at-the-israel-net-user-group-tomorrow.html)


---

## About the author

**Roy Osherove**: Senior Solutions Architect at AWS working on AI for production and AI-driven development; author of The Art of Unit Testing and Elastic Leadership, with about 20 years of consulting and training on unit testing, TDD, team leadership and continuous delivery.

### Sites

- [RobotPaper](https://robotpaper.ai/): This blog: AI patterns and anti-patterns, AI and coding agents, and engineering leadership.
- [osherove.com](https://osherove.com): Roy's personal site. Author of The Art of Unit Testing and Elastic Leadership; consulting and training on unit testing, TDD, team leadership and continuous delivery, plus about 20 years of blog posts.
- [The Art of Unit Testing](https://www.artofunittesting.com): The Art of Unit Testing, 3rd Edition (Manning): readable, maintainable, trustworthy unit tests, plus TDD workshops in C#, JavaScript, Java and Kotlin.
- [5whys.com](https://www.5whys.com): Roy's writing on software team leadership: self-organizing teams, surviving chaos, learning mode and the Elastic Leadership model.
- [Pipeline Driven](https://pipelinedriven.org): Continuous delivery and DevOps practices: build patterns, pipeline-friendly testing, DevOps metrics and enterprise DevOps.
- [Elastic Leadership](https://www.elasticleadership.com): Elastic Leadership, Roy's framework for software team leaders (survival, learning and self-organizing modes).

### Social

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- LinkedIn: https://www.linkedin.com/in/osherove/

### Contact

- Contact form: https://forms.gle/jQSx5KoXvrVA1JCK7

### License

Licensed under CC BY 4.0 — reuse, quote and adapt with attribution (Roy Osherove, link to the original page). License: https://creativecommons.org/licenses/by/4.0/