# vtkSocketCommunicator errors: "Could not receive tag" and "Endian handshake failed"

**URL:** https://discourse.paraview.org/t/vtksocketcommunicator-errors-could-not-receive-tag-and-endian-handshake-failed/3350
**Category:** ParaView Support
**Tags:** vtk
**Created:** [January 16, 2020, 1:31pm UTC](https://discourse.paraview.org/t/vtksocketcommunicator-errors-could-not-receive-tag-and-endian-handshake-failed/3350 "2020-01-16T13:31:06Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![cory.quammen](https://discourse.paraview.org/user_avatar/discourse.paraview.org/cory.quammen/32/11193_2.png) [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [February 13, 2020, 3:34pm UTC](https://discourse.paraview.org/t/vtksocketcommunicator-errors-could-not-receive-tag-and-endian-handshake-failed/3350/3 "2020-02-13T15:34:55Z")

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First, make sure that the VTK submodule is updated on both the client and server:

`git submodule update --recursive`

I have forgotten to do that and run into similar connection errors.

If that doesn’t work, you can try a `make clean` in your build directory. If that still doesn’t work, delete everything inside the build directory and start fresh.

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