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

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Archive for the ‘Windows Server 2003 R2’ Category

A year ago on Telegram: “Do I need to use GarbageCollectAtoms in Delphi? I used it in delphi 7, but I dont know what is benefit. 😐”

Posted by jpluimers on 2022/10/20

Last week I found out that I had some Windows ATOM issues before, but this beats them easily was still a draft in stead if in the blog queue.

I got reminded to it by someone asking on Telegram about

“Do I need to use GarbageCollectAtoms in Delphi? I used it in delphi 7, but I dont know what is benefit. 😐”.

The short answer is: yes, if your Delphi application does terminate in a way that the Controls unit cannot cleanly unload (and cannot free the Windows atoms) or leaks Windows atoms in a different way. I have been in that situation and that’s why I wrote the above blog post that got published in 2016.

The longer answer is likely no, both the Windows atom and registered Windows message table share a heap and that registered VCL Windows message leaking bug got fixed some 10 years ago in Delphi XE2, see:

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Posted in Conference Topics, Conferences, Delphi, Development, Event, Power User, Software Development, Windows, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows NT, Windows Server 2000, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Vista, Windows XP | Leave a Comment »

I had some Windows ATOM issues before, but this beats them easily

Posted by jpluimers on 2022/10/19

I’ve had some issues with Windows ATOM tables filling up, but nothing like this security bypass:

A new Windows code injection technique, atombombing, which bypasses current security solutions.

Source: AtomBombing: Brand New Code Injection for Windows – Breaking Malware [WayBack] with source code at BreakingMalwareResearch/atom-bombing: Brand New Code Injection for Windows

Note that since writing the first draft, the above AtomBombing article moved via Wayback: blog.ensilo.com to [Wayback/Archive.is] AtomBombing – A Brand New Code Injection Technique for Windows | FortiGuard Labs.

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Posted in Development, Power User, Software Development, Windows, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows 9, Windows Development, Windows Server 2000, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Vista, Windows XP | Leave a Comment »

Chocolatey on Windows 7: “You must provide a value expression on the right-hand side of the ‘-‘ operator.”

Posted by jpluimers on 2022/06/08

One of the places explaining a more and more frequent error on Windows 7 installations is [Wayback/Archive.is] “You must provide a value expression on the right-hand side of the ‘-‘ operator.” · Issue #29 · shiftkey/chocolatey-beyondcompare:

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Posted in Chocolatey, CommandLine, Development, Microsoft Surface on Windows 7, Power User, PowerShell, PowerShell, Scripting, Software Development, Windows, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2 | Leave a Comment »

The Windows key has no Unicode equivalent, so use ⊞ like Wikipedia and many others do

Posted by jpluimers on 2021/08/23

lFor Mac keyboard keys, almost all (except the old solid and open Apple logo’s) have a Unicode code point, see for instance the modifier keys from the [WayBack] List of Mac/Apple keyboard symbols · GitHub (the “Alt” column has a solid Apple logo in the bottom right; on non-Mac systems it will look differently as it is in the Unicode private range: [WayBack] Unicode Character ” (U+F8FF): ‘<Private Use, Last>’):

Sym Key Alt
Control
Option
Shift
Command

These are the code points for the “Sym” column:

Keys on many platforms

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Posted in Microsoft Surface on Windows 7, Power User, Windows, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows 95, Windows 98, Windows NT, Windows Server 2000, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Vista, Windows XP | 1 Comment »

How to turn on automatic logon in Windows

Posted by jpluimers on 2021/08/09

[WayBack] How to turn on automatic logon in Windows

Describes how to turn on the automatic logon feature in Windows by editing the registry.

Most archivals of the above post fail with a 404-error after briefly flashing the content, but this particular one usually succeeds displaying.

It is slightly different from the one referenced in my blog post automatic logon in Windows 2003, and because of the archival issues, I have quoted most of it below.

A few observations, at least in Windows 10 and 8.1:

  • Major Windows 10 upgrades will disable the autologon: after each major upgrade, you have to re-apply the registry patches.
  • If the user has a blank password, you can remove the DefaultPassword value.
    • Empty passwords allow local logon (no network logon or remote desktop logon), no network access and no RunAs, which can actually help improve security. More on that in a later blog post
  • For a local machine logon, you do not need the DefaultDomainName value either (despite many posts insisting you need them), but you can technically set it to the computer name using reg add "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /v DefaultDomainName /t REG_SZ /d %ComputerName% /f
  • If another user logs on and off, the values keep preserved, so after a reboot, the correct user automatically logs on
  • you need a full reboot cycle for this to take effect
  • The AutoLogon tool does not allow blank passwords

I wrote a batch file enable-autologon-for-user-parameter.bat that makes it easier:

if [%1] == [] goto :help

:enable
  reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v AutoAdminLogon /t REG_SZ /d 1 /f
:setUserName
  reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v DefaultUserName /t REG_SZ /d %1 /f
:removePasswordIfItExists
  reg delete "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v DefaultPassword /f
if [%2] == [] goto :eof
:setPassword
  reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v DefaultPassword /t REG_SZ /d %2 /f  
  goto :eof

:help
  echo Syntax:
  echo   %0 username password

The article quote:

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Posted in Batch-Files, Development, Microsoft Surface on Windows 7, Power User, Scripting, Software Development, Windows, Windows 10, Windows 7, Windows 8, Windows 8.1, Windows 9, Windows Server 2003, Windows Server 2003 R2, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Vista, Windows XP | Leave a Comment »

 
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