# HTTP exception 500

**URL:** <https://forum.inductiveautomation.com/t/http-exception-500/14946>\
**Category:** Ignition\
**Tags:** ignition79\
**Created:** [August 1, 2017, 12:12am UTC](https://forum.inductiveautomation.com/t/http-exception-500/14946 "2017-08-01T00:12:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![andrewbrown](https://avatars.discourse-cdn.com/v4/letter/a/a8b319/32.png) [@andrewbrown](https://forum.inductiveautomation.com/u/andrewbrown)\
**Post date:** [August 1, 2017, 12:12am UTC](https://forum.inductiveautomation.com/t/http-exception-500/14946/1 "2017-08-01T00:12:37Z")

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Hi all,

I am currently experiencing this error in my logs, it is triggered when users are attempting to log into both the designer and the client. The popup that occurs is a HttpResponseException:500: Server Error

Any help would be appreciated.

Below is the log wrapper.

java.io.IOException: Cannot run program “java” (in directory “data\mobile\_wdir”): CreateProcess error=267, The directory name is invalid

at java.lang.ProcessBuilder.start(Unknown Source)

at com.inductiveautomation.mobile.gateway.MobileVMManager$VMCreator.createNewVM(MobileVMManager.java:860)

at com.inductiveautomation.mobile.gateway.MobileVMManager$VMCreator.run(MobileVMManager.java:788)

at java.lang.Thread.run(Unknown Source)

Caused by: java.io.IOException: CreateProcess error=267, The directory name is invalid

at java.lang.ProcessImpl.create(Native Method)

at java.lang.ProcessImpl.(Unknown Source)

at java.lang.ProcessImpl.start(Unknown Source)

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<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [August 1, 2017, 1:32pm UTC](https://forum.inductiveautomation.com/t/http-exception-500/14946/2 "2017-08-01T13:32:44Z")

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Try editing your ignition.conf file to use all forward slashes in folder paths.