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June 7, 2018
Windows 10 (Release 1803) Prevents Execution Over SMBv1

The April 2018 Windows update (Release 1803) removes the ability for EVP Office (or any other executable) to run if it is hosted on a network share that uses SMB Version 1. SMBv1 has been deprecated by Microsoft since 2014, and removing the ability for applications to run over it is a security feature of the new release of Windows.

EstateVal and the other EVP Office applications will report this situation as:

Log-on failed: Talk_CreateTcpClient() failed: Sock_Handle_OpenClient() failed (-4)

...or:

Log-on failed: Talk_CreateTcpClient() failed: Sock_Handle_OpenClient() failed (-4022)

To determine if the Windows 10 client is using SMBv1, run the following command from PowerShell as a user with administrative privledges:

Get-SmbConnection

If the share that hosts the EVP Office executables show a "Dialect" of less than "2.0", the server that provides the share will need to be upgraded.