# Installation Problem, JSON requirements | Windows

**URL:** <https://community.mrtrix.org/t/installation-problem-json-requirements-windows/1512>\
**Category:** Uncategorized\
**Created:** [March 9, 2018, 2:10pm UTC](https://community.mrtrix.org/t/installation-problem-json-requirements-windows/1512 "2018-03-09T14:10:00Z")\
**Posts on this page:** 1\
**Showing post:** 20

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**Author:** ![MrtnStnwk](https://community.mrtrix.org/letter_avatar_proxy/v4/letter/m/cab0a1/32.png) [@MrtnStnwk](https://community.mrtrix.org/u/MrtnStnwk)\
**Post date:** [March 23, 2018, 7:32pm UTC](https://community.mrtrix.org/t/installation-problem-json-requirements-windows/1512/20 "2018-03-23T19:32:19Z")

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Interesting that this question comes along.

Actually I have the exact same problem on CentOs 7. ./configure fails with the message that JSON can’t be configured. And in error.log it says that /lib64/libstdc++.so.6: version ‘GLIBCXX\_3.4.21’ is not found. Any ideas how to approach this?

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