# PlusServer + OpenIGTLinkIF

**URL:** <https://discourse.slicer.org/t/plusserver-openigtlinkif/4258>\
**Category:** Support\
**Tags:** plus, slicerigt, openigtlink\
**Created:** [October 2, 2018, 3:10pm UTC](https://discourse.slicer.org/t/plusserver-openigtlinkif/4258 "2018-10-02T15:10:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jrhodes](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jrhodes/32/5709_2.png) [@jrhodes](https://discourse.slicer.org/u/jrhodes)\
**Post date:** [October 2, 2018, 3:10pm UTC](https://discourse.slicer.org/t/plusserver-openigtlinkif/4258/1 "2018-10-02T15:10:25Z")

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Downloaded nightly builds of Plus and Slicer using Windows 64bit. Need paper marker tracking so I selected “optical marker tracker using MMF video.”

I’m trying to use my built-in webcam but cant get it to work and keep getting “connection failed”

What are the steps to fix this?

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [October 2, 2018, 6:30pm UTC](https://discourse.slicer.org/t/plusserver-openigtlinkif/4258/2 "2018-10-02T18:30:22Z")

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Hardware connections must be established successfully in Plus before you can receive anything in Slicer. If you have problems with this then please it in [Plus toolkit’s issue tracker](https://github.com/PlusToolkit/PlusLib/issues/). If you see data showing up in Slicer and you have problems using or visualizing the data then please we are happy to help here.