# Dragonfly URBANOPT PROBLEM

**URL:** <https://discourse.ladybug.tools/t/dragonfly-urbanopt-problem/36212>\
**Category:** dragonfly\
**Created:** [March 19, 2025, 4:13pm UTC](https://discourse.ladybug.tools/t/dragonfly-urbanopt-problem/36212 "2025-03-19T16:13:58Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Adarsha](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/a/b9bd4f/32.png) [@Adarsha](https://discourse.ladybug.tools/u/Adarsha)\
**Post date:** [March 19, 2025, 4:13pm UTC](https://discourse.ladybug.tools/t/dragonfly-urbanopt-problem/36212/1 "2025-03-19T16:13:58Z")

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Hello,  
I am actually trying to simulate a urban pocket of the city to compare the performance of Green roofs vs concrete roofs to mitigate Urban heat island effect for my thesis defence but i am constantly encountering error… I have tried re-installing the URBANOPT Several times also tries updating ruby and gems as well as created paths in enviroment variables yet nothing seems to work… please help me My deadline is near…I am uploading the files and images…i am a new user and i couldnt upload files please share me your mail i would be more than happy to share the files

 ![Screenshot (9)](https://discourse.ladybug.tools/uploads/default/original/3X/f/0/f080d1bced521208a773fcbc7e02ae938273710c.jpeg)

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<div class="post-metadata">

**Author:** ![Adarsha](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/a/b9bd4f/32.png) [@Adarsha](https://discourse.ladybug.tools/u/Adarsha)\
**Post date:** [March 19, 2025, 4:31pm UTC](https://discourse.ladybug.tools/t/dragonfly-urbanopt-problem/36212/2 "2025-03-19T16:31:17Z")

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here are some more picture for better context

 ![Screenshot (12)](https://discourse.ladybug.tools/uploads/default/original/3X/b/4/b46647d99723d9a1ccf6a656fc314cf352f645a3.jpeg)

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<div class="post-metadata">

**Author:** ![Adarsha](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/a/b9bd4f/32.png) [@Adarsha](https://discourse.ladybug.tools/u/Adarsha)\
**Post date:** [March 19, 2025, 4:32pm UTC](https://discourse.ladybug.tools/t/dragonfly-urbanopt-problem/36212/3 "2025-03-19T16:32:36Z")

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pic 2

 ![Screenshot 2025-03-19 221301](https://discourse.ladybug.tools/uploads/default/original/3X/a/5/a588d09eac7cee0c9439a88134a064fe10fb6b2a.png)

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<div class="post-metadata">

**Author:** ![Adarsha](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/a/b9bd4f/32.png) [@Adarsha](https://discourse.ladybug.tools/u/Adarsha)\
**Post date:** [March 19, 2025, 4:33pm UTC](https://discourse.ladybug.tools/t/dragonfly-urbanopt-problem/36212/4 "2025-03-19T16:33:12Z")

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pic 3

 ![Screenshot 2025-03-19 221337](https://discourse.ladybug.tools/uploads/default/original/3X/d/8/d87458ed375c44f86757c2be2674a73e018d4916.png)

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<div class="post-metadata">

**Author:** ![Adarsha](https://discourse.ladybug.tools/letter_avatar_proxy/v4/letter/a/b9bd4f/32.png) [@Adarsha](https://discourse.ladybug.tools/u/Adarsha)\
**Post date:** [March 19, 2025, 4:33pm UTC](https://discourse.ladybug.tools/t/dragonfly-urbanopt-problem/36212/5 "2025-03-19T16:33:46Z")

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pic4

 ![Screenshot 2025-03-19 221353](https://discourse.ladybug.tools/uploads/default/original/3X/1/b/1b0337e65f89aed5dbee478ff1f37dc1add874ba.png)

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**Author:** ![chris](https://discourse.ladybug.tools/user_avatar/discourse.ladybug.tools/chris/32/10179_2.png) [@chris](https://discourse.ladybug.tools/u/chris)\
**Post date:** [April 28, 2025, 6:00pm UTC](https://discourse.ladybug.tools/t/dragonfly-urbanopt-problem/36212/6 "2025-04-28T18:00:17Z")

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Hey @Adarsha ,

This appears to be the same issue as was noted here:

> [@Urban opt simulation not working](https://discourse.ladybug.tools/t/urban-opt-simulation-not-working/35750):
>
> Urban opt simulation not working, does anyone know how to solve the problem? Solution exception:An URBANopt installation was found at C:\URBANopt-cli-0.14.0 but the URBANopt executable is not accessible. Der Befehl “uo” ist entweder falsch geschrieben oder konnte nicht gefunden werden.

It results from you having some security restrictions on your machine that prevent you from running powershell files.

NREL is working to address the issue once and for all with the next URBANopt release but, in the meantime, your only options are to either figure out what is blocking powershell files from running on your system and unblock it OR you could use the LBT 1.8 stable release that used URBANopt 0.11.1 as you see in the [compatibility matrix](https://github.com/ladybug-tools/lbt-grasshopper/wiki/1.4-Compatibility-Matrix). URBANopt 0.11.1 is from before when URBANopt started using powershell files.