protocol error server return message

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yezhouyugon
Posts: 10
Joined: Wed Feb 08, 2023 10:37 am

protocol error server return message

Post by yezhouyugon » Wed Feb 08, 2023 1:27 pm

I installed softether vpn on win10 computer, the server and client Settings are correct, but the connection failed to display "protocol error server return message". Please help solve it. thank you.
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solo
Posts: 1228
Joined: Sun Feb 14, 2021 10:31 am

Re: protocol error server return message

Post by solo » Wed Feb 08, 2023 11:52 pm

Tell us more & post logs.

yezhouyugon
Posts: 10
Joined: Wed Feb 08, 2023 10:37 am

Re: Server and client configuration snapshots

Post by yezhouyugon » Thu Feb 09, 2023 2:46 am

This is a screenshot of configuring the server and client. Server host is filled in my own computer ip, other configuration is automatic, I did not change. But it just won't connect. My computer is win10 enterprise version system, is a separate network.
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solo
Posts: 1228
Joined: Sun Feb 14, 2021 10:31 am

Re: protocol error server return message

Post by solo » Thu Feb 09, 2023 5:59 am

net stop SEVPNSERVER
nc -l 5555
net start SEVPNSERVER

Code: Select all

SoftEther VPN Server Manager
---------------------------
Protocol error occurred. Error was returned from the destination server.
---------------------------
OK   
Which means...
- get rid of whatever else is running on SE's port
- or change connection port

BTW, when you've done it you'll discover that running SE client on the same LAN is a horrible idea.

yezhouyugon
Posts: 10
Joined: Wed Feb 08, 2023 10:37 am

Re: protocol error server return message

Post by yezhouyugon » Thu Feb 09, 2023 1:44 pm

Please check whether my server and client are equipped with que correctly. If the configuration is correct, why the connection fails?
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lucas
Posts: 7
Joined: Wed Feb 08, 2023 7:51 pm

Re: protocol error server return message

Post by lucas » Thu Feb 09, 2023 3:10 pm

在服务器选择界面,选择编辑设置,把截图post出来看看,并且在服务器上执行solo说的指令,并且post出结果来

solo
Posts: 1228
Joined: Sun Feb 14, 2021 10:31 am

Re: protocol error server return message

Post by solo » Thu Feb 09, 2023 8:38 pm

Translation?

Anyway, change the port from 443 to 992.

yezhouyugon
Posts: 10
Joined: Wed Feb 08, 2023 10:37 am

Re: protocol error server return message

Post by yezhouyugon » Fri Feb 10, 2023 4:41 am

I changed port 443 to 991 as suggested, but it still cannot be connected.
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yezhouyugon
Posts: 10
Joined: Wed Feb 08, 2023 10:37 am

Still can't connect

Post by yezhouyugon » Fri Feb 10, 2023 6:22 am

Port 443 changed to 992 but still cannot be connected.
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yezhouyugon
Posts: 10
Joined: Wed Feb 08, 2023 10:37 am

I can't connect to port 443 after changing it

Post by yezhouyugon » Fri Feb 10, 2023 7:04 am

I can't connect to port 443 after changing it.
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solo
Posts: 1228
Joined: Sun Feb 14, 2021 10:31 am

Re: protocol error server return message

Post by solo » Fri Feb 10, 2023 9:46 am

Is it now Error Code 12?
"Access has been denied"?
"Akusesu wa kyohi sa remashita"?
Maybe you forgot your password, check this thread https://www.vpnusers.com/viewtopic.php?f=7&t=5762

yezhouyugon
Posts: 10
Joined: Wed Feb 08, 2023 10:37 am

The password is correct.

Post by yezhouyugon » Sat Feb 11, 2023 9:22 am

The password is correct.It's not the password that's causing the problem.

yezhouyugon
Posts: 10
Joined: Wed Feb 08, 2023 10:37 am

Re: protocol error server return message

Post by yezhouyugon » Thu Feb 16, 2023 5:31 am

Please check the screenshot. I don't know why I can't connect to the server.
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