The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Windows 10’ Category

Adding Windows machines to Samba domains and security

Posted by jpluimers on 2018/12/07

If adding a Windows machine to a Samba domain fails and the below “solves” your issue, then you need to tighten the security on the Samba side:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\LanmanWorkstation\Parameters]
; Enable NT-Domain compatibility mode
; Default:
; [value not present]
; "DomainCompatibilityMode"=-
"DomainCompatibilityMode"=dword:00000001

; Disable required DNS name resolution
; Default:
; [value not present]
; "DNSNameResolutionRequired"=-
"DNSNameResolutionRequired"=dword:00000000


[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Netlogon\Parameters]
; Disable requirement of signed communication
; My Samba (3.0.33) works with signed communication enabled, so no need to disable it.
; Default:
; "RequireSignOrSeal"=dword:00000001
; Disable the usage of strong keys
; Default:
; "RequireStrongKey"=dword:00000001
"RequireStrongKey"=dword:00000000

–jeroen

Posted in *nix, *nix-tools, Power User, samba SMB/CIFS/NMB, Windows, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows 9 | Leave a Comment »

UTF-8 support for single byte character sets is beta in Windows and likely breaks a lot of applications not expecting this (via Unicode in Microsoft Windows: UTF-8 – Wikipedia)

Posted by jpluimers on 2018/12/04

Uh-oh: [WayBack] Unicode in Microsoft Windows: UTF-8 – Wikipedia:

Microsoft Windows has a code page designated for UTF-8code page 65001. Prior to Windows 10 insider build 17035 (November 2017),[7] it was impossible to set the locale code page to 65001, leaving this code page only available for:

  • Explicit conversion functions such as MultiByteToWideChar
  • The Win32 console command chcp 65001 to translate stdin/out between UTF-8 and UTF-16.

This means that “narrow” functions, in particular fopen, cannot be called with UTF-8 strings, and in fact there is no way to open all possible files using fopen no matter what the locale is set to and/or what bytes are put in the string, as none of the available locales can produce all possible UTF-16 characters.

On all modern non-Windows platforms, the string passed to fopen is effectively UTF-8. This produces an incompatibility between other platforms and Windows. The normal work-around is to add Windows-specific code to convert UTF-8 to UTF-16 using MultiByteToWideChar and call the “wide” function.[8] Conversion is also needed even for Windows-specific api such as SetWindowText since many applications inherently have to use UTF-8 due to its use in file formats, internet protocols, and its ability to interoperate with raw arrays of bytes.

There were proposals to add new API to portable libraries such as Boost to do the necessary conversion, by adding new functions for opening and renaming files. These functions would pass filenames through unchanged on Unix, but translate them to UTF-16 on Windows.[9] This would allow code to be “portable”, but required just as many code changes as calling the wide functions.

With insider build 17035 and the April 2018 update (nominal build 17134) for Windows 10, a “Beta: Use Unicode UTF-8 for worldwide language support” checkbox appeared for setting the locale code page to UTF-8.[a] This allows for calling “narrow” functions, including fopen and SetWindowTextA, with UTF-8 strings. Microsoft claims this option might break some functions (a possible example is _mbsrev[10]) as they were written to assume multibyte encodings used no more than 2 bytes per character, thus until now code pages with more bytes such as GB 18030 (cp54936) and UTF-8 could not be set as the locale.[11]


  1. Jump up^ [WayBack“UTF-8 in Windows”Stack Overflow. Retrieved July 1, 2011.
  2. Jump up^ [WayBack“Boost.Nowide”.
  3. Jump up^ [WayBackhttps://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/strrev-wcsrev-mbsrev-mbsrev-l
  4. Jump up^ [WayBack“Code Page Identifiers (Windows)”msdn.microsoft.com.

Via [WayBack] Microsoft Windows Beta UTF-8 support for Ansi API could break things. Wiki Article of the Change… – Tommi Prami – Google+

Related, as handling encoding is hard, especially if it is changed or not your default:

–jeroen

Posted in .NET, C, C++, Delphi, Development, Power User, Software Development, Windows, Windows 10 | 2 Comments »

O&O ShutUp10: download free antispy tool for Windows 10

Posted by jpluimers on 2018/11/23

I’m not surprised this free product is from German origin:

With O&O ShutUp10 you have full control over which functions under Windows 10 you wish to use, and you decide when the passing on of your data goes too far.

[WayBackO&O ShutUp10: download free antispy tool for Windows 10

Download: [WayBackdl5.oo-software.com/files/ooshutup10/OOSU10.exe

Run it after each update as well.

–jeroen

Posted in Power User, Windows, Windows 10 | Leave a Comment »

When Windows removes the registry key that solves HighDPI problems for older applications

Posted by jpluimers on 2018/10/01

I write about this registry key before: Applications that scale badely on High-DPI Displays: How to Stop the Madness – via: SQLServerCentral « The Wiert Corner – irregular stream of stuff

It seems that there is a bad Windows habit: [WayBack] I just love it when Windows decides to remove registry entries I’ve added and screws up something I fixed for them. – Roderick Gadellaa – Google+

–jeroen

 

Posted in Power User, Windows, Windows 10 | Leave a Comment »

When you cannot RDP to a target because of “CredSSP-encryption Oracle remediation”: apply your target security patches.

Posted by jpluimers on 2018/06/29

If you get the below error, then your RDP target server needs to be patched.

You can choose to stay vulnerable and modify your policy or registry settings as explained in the first linked article below: that is a temporary “workaround” which I do not recommend. Please update your RDP target servers in stead.

English:

[Window Title]
Remote Desktop Connection

[Content]
An authentication error has occurred.
The function requested is not supported

Remote computer: rdp.example.org
This could be due to CredSSP-encryption Oracle remediation.
For more information, see https://go.microsoft.com/fwlink/?linkid=866660

[OK]

Read the rest of this entry »

Posted in Power User, Windows, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows 9, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 | Leave a Comment »

 
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