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WekizZ
WekizZ
Join Date 01/0001
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Seamless Display

Connection failed due to an unknown protocol error. (3)

February 12, 2025 7:02:47 AM from Stardock ForumsStardock Forums

I tried both ways and get the same error. Tried over WiFi and over ethernet cable on the same switch.

Other functions are working as it should.

EDIT:

I have did this also on both computers.

To easily rewrite the rules for Multiplicity, you can use this batch file to do so:

https://cdn.stardock.us/support/uploads/MPPortFix.zip

error connection failed multiplicity seamless display
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WekizZ
basj
Join Date 03/2001
+1602 sdemployee
Reply #1 February 12, 2025 7:10:52 AM
from Stardock ForumsStardock Forums

Hello,
Sorry to hear you are having issues. Please review these threads and see if any of them give you something to try.

  1. https://forums.stardock.com/531944 
  2. https://forums.stardock.com/531336 

Please report back if you still need assistance.

Thank you.
Basj,
Stardock Community Assistant.

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WekizZ
Neil Banfield
Join Date 04/2001
+1079 sdemployee
Reply #2 February 12, 2025 7:22:17 AM
from Stardock ForumsStardock Forums

Do you have multiple adapters or multiple IP addresses on a single adapter?

If so we may have a fix for that in internal testing right now.

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WekizZ
WekizZ
Join Date 01/0001
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Reply #3 February 12, 2025 7:28:07 AM
from Stardock ForumsStardock Forums

Not that I know of. My laptop has a WiFi and Ethernet so that could count as multi, but when I try one I disable other.

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WekizZ
WekizZ
Join Date 01/0001
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Reply #4 February 12, 2025 7:49:51 AM
from Stardock ForumsStardock Forums

Solved: Fire wall on a private network was blocking it!

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WekizZ
WekizZ
Join Date 01/0001
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Reply #5 February 12, 2025 8:08:22 AM
from Stardock ForumsStardock Forums

Another problem is when something crash (connect maybe, what I really doubt. Maybe CPU is struggling), no error but the display of shared screen is frozen on a secondary screen and I cant remove it, task manager also open behind of it, so cant reach it.

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