When stacking 8 switches, all of them *unconfigure switch all* and out of the box... So they have never had ANY CONFIG. Some switches show this when you run show licence
![](https://d1uyvls174j03l.cloudfront.net/extremenetworks-us/attachment/RackMultipart20170322-12545-r908u9-Screen_Shot_2017-03-22_at_4.16.57_PM_inline.png)
You see Feature Packs: DirectAttach
This causes members of the stack to fail to join with a licence error. Not sure what DirectAttach is or why its installed. But I had to do a clear licence on all switches before the stack would be stable at all.