# Paraview 5.11.1 stuck on establishing connection when connecting to pvserver
**URL:** https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371
**Category:** ParaView Support
**Created:** [June 22, 2023, 10:22pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371 "2023-06-22T22:22:38Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@vrkssai](https://discourse.paraview.org/u/vrkssai)
#### Post date: [June 22, 2023, 10:22pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/1 "2023-06-22T22:22:38Z")
I’m trying to connect to pvserver on a remote machine using ssh portforwarding to local machine. I was able to use it with Paraview 5.8.1, but when I use 5.11.1 paraview is stuck in “waiting 60 seconds”. But I can see from pvserver logs that it says “client connected”. I’m running paraview from terminal and I see no retrying or other errors. On pvserver side I use the command “mpiexec pvserver” (mpiexec from paraview package I downloaded). My client is on Ubuntu 22.04.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 23, 2023, 10:37am UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/2 "2023-06-23T10:37:20Z")
Just wait a bit longer, connection can take up to 60 seconds.
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### Author:  [@vrkssai](https://discourse.paraview.org/u/vrkssai)
#### Post date: [June 23, 2023, 6:57pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/3 "2023-06-23T18:57:34Z")
It has taken more than 60 seconds and I only killed it after a long time (maybe 5min). It also seems to happen only sometimes. Paraview 5.11.0 or 5.8.1 didn’t seem to take long or never have issues connecting for the same client and server.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 28, 2023, 6:58am UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/4 "2023-06-28T06:58:28Z")
So ParaView stays stuck on the “waiting 60 seconds” for more than 60 seconds, is that correct ?
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### Author:  [@vrkssai](https://discourse.paraview.org/u/vrkssai)
#### Post date: [June 28, 2023, 6:47pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/5 "2023-06-28T18:47:39Z")
Yes, I often have to just kill it.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 29, 2023, 6:28am UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/6 "2023-06-29T06:28:40Z")
Do you see a “Client connected” in the terminal output of the server ?
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### Author:  [@vrkssai](https://discourse.paraview.org/u/vrkssai)
#### Post date: [June 29, 2023, 1:40pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/7 "2023-06-29T13:40:54Z")
Yes. I see client connected message
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 29, 2023, 1:42pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/8 "2023-06-29T13:42:03Z")
Do you have any plugin on auto load ? Please try to reset your settings.
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### Author:  [@vrkssai](https://discourse.paraview.org/u/vrkssai)
#### Post date: [June 29, 2023, 2:01pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/9 "2023-06-29T14:01:16Z")
I don’t see any plugins autoloading. The only plugin I see loaded is the vtkPVInitialiser plugin. I dont know if this helps but, when I have v5.11.0 as server and v5.11.1 as client. It seems to have no problem using it. The establishing connection dialog box disappears and everything works fine.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 29, 2023, 2:02pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/10 "2023-06-29T14:02:55Z")
> when I have v5.11.0 as server and v5.11.1 as client.
This should not work at all. exact same version is required.
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### Author:  [@vrkssai](https://discourse.paraview.org/u/vrkssai)
#### Post date: [June 29, 2023, 3:00pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/12 "2023-06-29T15:00:43Z")
It does indeed work, I double checked the client and server versions. I have the logs here for both the cases(v5.11.1tov5.11.1 it fails, v5.11.1tov5.11.0 it works) on client and server side.
[logs.zip](https://discourse.paraview.org/uploads/short-url/xaS5cWxEigl4HZqun2H0fesFiik.zip) (695.1 KB)
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### Author:  [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [July 4, 2023, 7:40am UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/13 "2023-07-04T07:40:27Z")
All minor versions of ParaView, even with different patch numbers, should be able to connect to any other, e.g. 5.10.0 to 5.10.1, 5.11.1 to 5.11.0, and so on. The reason is because the proxy/property interface is not allowed to change in patch versions, hence the client/server protocol generated from that interface is the same.
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### Author:  [@vrkssai](https://discourse.paraview.org/u/vrkssai)
#### Post date: [July 5, 2023, 11:10pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/14 "2023-07-05T23:10:24Z")
@cory.quammen Thank you for clarifying!, any ideas on why v5.11.1 is stuck on connecting dialog box?. I’ve attached logs in the previous comment.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [July 7, 2023, 8:05am UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/15 "2023-07-07T08:05:02Z")
Looking at the code (vtkSocketCommunicator.cxx), here is what I see:
- Endian check
- vtkSocketController version check (related to the `vtkSocketController` logic, not VTK version or ParaView
- vtkSocketController “hash” check that has not been updated since 2019 (at least)
- IdType size check
Am I missing a dedicated logic checking actual ParaView version somewhere ?
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### Author:  [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [August 3, 2023, 2:04am UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/16 "2023-08-03T02:04:56Z")
A handshake string including the major.minor version is created in `vtkSMSessionClient::Connect()`.
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### Author:  [@Dosmi](https://discourse.paraview.org/u/Dosmi)
#### Post date: [August 6, 2023, 5:31pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/17 "2023-08-06T17:31:57Z")
I have the same exact problem for ParaView 5.11.1 server. The message box “Waiting for Connection to Server” is new - never used to happen in ParaView 5.10. My server says “Client Connected” immediately, but the client freezes as the message box cannot be closed. @cory.quammen
Solution/Workaround is the same as @vrkssai suggested:
Server 5.11.1 → Clients 5.11.1 or 5.11.0 caused the message box “Establishing connection to …” to show up
Server 5.11.0 → Client 5.11.0 - the message box disappears immediately and I can use it.
Therefore, it seems like a bug introduced with the 5.11.1 server-side code.
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### Author:  [@Dosmi](https://discourse.paraview.org/u/Dosmi)
#### Post date: [August 6, 2023, 6:37pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/18 "2023-08-06T18:37:50Z")
Unfortunate update - while it did work with the base PV 5.11.0 Server, but as soon as I added a TTK patch and a TTK plugin, it stopped working - same “Waiting for Connection to Server” message stuck… I’ve used ParaView 5.10 and TTK 1.10 before many times and never had these problems.
Workaround - use PV 5.11.0 Server → PV 5.11.1 Client - so far this is the only configuration that is working - after a few seconds (like 5-10s) it is possible to close the "Waiting … " message box.
Also, for the best experience if you are using plugins, load the required plugins locally before connecting to the server (Tools → Manage Plugins → …).
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [August 16, 2023, 3:32pm UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/19 "2023-08-16T15:32:05Z")
> but as soon as I added a TTK patch and a TTK plugin, it stopped working
Does it work if you load the plugin after connecting ?
FYI @Charles_Gueunet @julien-tierny
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### Author:  [@Charles\_Gueunet](https://discourse.paraview.org/u/Charles_Gueunet)
#### Post date: [August 21, 2023, 6:47am UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/20 "2023-08-21T06:47:41Z")
Which TTK patch are you referring to ? Have you tried without the TTK patch (still with the TTK plugin) ?
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [March 8, 2024, 9:39am UTC](https://discourse.paraview.org/t/paraview-5-11-1-stuck-on-establishing-connection-when-connecting-to-pvserver/12371/21 "2024-03-08T09:39:33Z")
4 posts were split to a new topic: [Unable to connect to server with ParaView 5.12](https://discourse.paraview.org/t/unable-to-connect-to-server-with-paraview-5-12/14110)