The error message you're encountering after updating to Windows 11 24H2 indicates that the update may have altered your network settings or security policies, affecting your access to the network drive. Here’s a breakdown of the situation and potential solutions.
Understanding the Issue
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Error Code 0x80070035: This error typically means that the network path cannot be found. It could be due to incorrect spelling, network issues, or changes in network settings after the update.
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System Error 1272: This error indicates that your access to the shared folder is blocked due to security policies that prevent unauthenticated guest access. This is a common security measure in corporate environments to protect against unauthorized access.
Possible Solutions
To resolve this issue, consider the following steps:
Powershell (as admin)
Set-SmbClientConfiguration -RequireSecuritySignature $false -Force
Has resolved various PCs with similar symptoms in the last two weeks. Devices could see the device hosting the share, had file and printer sharing turned on etc. Could see the folder but just couldn't open it. Think the error was 0x80070035 network path not found.
https://learn.microsoft.com/en-us/windows-server/storage/file-server/smb-signing?tabs=powershell
Windows 11, version 24H2 Enterprise, Pro, and Education require both outbound and inbound SMB signing.
Guesing this was not the case for 23H2 and prior.
Maybe try these as well if first one doesn't do the trick:
Set-SmbClientConfiguration -EnableInsecureGuestLogons $true -Force
Set-SmbClientConfiguration -RequireSecuritySignature $false -Force
Set-SmbServerConfiguration -RequireSecuritySignature $false -Force