the SMB / network‑sharing issue

MarkMac51 0

every time i update to a newer version of Windows 25H2 i loss connection to my other computers on the network. I have to uninstall the update and run 24H2. This has been going on since October 2025. HELP

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Ivan B 122.3K Reputation points Independent Advisor

2026-09-08T21:05:00.8366667+00:00

Hi,

What network error are you seeing—is it related to the IP connection type or an authentication failure?

If possible, please let me know the specific error message that appears when you try to access SMB.

Thanks.
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Ivan B 122.3K Reputation points Independent Advisor

2026-09-10T00:03:00.6+00:00

Hi,

If possible, please run a test: create a local account on the computers in question, grant the necessary permissions, and try connecting. I believe you are likely using the same Microsoft account for Windows on both computers.

If that fails, run the following commands in Windows PowerShell (as administrator):

Set-SmbClientConfiguration -RequireSecuritySignature $false

Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" RequireSecureNegotiate -Value 0 -Force

Restart the computer and try again.

Please let me know the result.

Thanks.

MarkMac51 0 Reputation points

2026-09-10T15:34:59.1666667+00:00

do i run Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" RequireSecureNegotiate -Value 0 -Force with Windows Power Shell (as Admin) also?
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the SMB / network‑sharing issue

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