MS-Logon Plugin

After more 2 000 000 (two million) views on forum for 1.5.0.x development versions... and 1.6.1.0, 1.6.3.0-dev versions
A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
Feedback is always welcome

2026-04-01: After 1.7.x, 1.8.x release builds need tests and feedback: https://forum.uvnc.com/viewtopic.php?t=38158

2026-03-11: CVE-2026-3787 and CVE-2026-4962 - Clarification: https://forum.uvnc.com/viewtopic.php?t=38155

2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page

2025-05-06: Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078

2023-09-21: Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864

Development: UltraVNC development is always here... Any help is welcome
Feedback is welcome

Help is very needed for:
Windows ARM/ARM64 support: https://forum.uvnc.com/viewtopic.php?t=38163 / https://github.com/ultravnc/UltraVNC/issues/346
macOS support: https://forum.uvnc.com/viewtopic.php?t=38164 / https://github.com/ultravnc/UltraVNC/issues/347
Linux support: https://forum.uvnc.com/viewtopic.php?t=38165 / https://github.com/ultravnc/UltraVNC/issues/348
*BSD support: https://forum.uvnc.com/viewtopic.php?t=38166 / https://github.com/ultravnc/UltraVNC/issues/349
*Solaris support: https://forum.uvnc.com/viewtopic.php?t=38167 / https://github.com/ultravnc/UltraVNC/issues/350

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Announcements

Replies

Views

Last post

Celebrating the 23th anniversary of the UltraVNC (26th anniversary since the laying of the foundation stone)

Last post by Ludovic « 2025-12-05 11:12
Posted in Announcements

by Ludovic » 2025-12-05 11:12 » in Announcements

0 Replies

664822 Views

Last post by Ludovic
2025-12-05 11:12
Poll: Renaming UltraVNC files and service to be more clear

Last post by Ludovic « 2025-12-03 20:20
Posted in Announcements

by Ludovic » 2025-12-03 20:20 » in Announcements

0 Replies

402733 Views

Last post by Ludovic
2025-12-03 20:20
UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 Released

Last post by Ludovic « 2025-06-25 16:38
Posted in Announcements

by Ludovic » 2025-06-25 16:38 » in Announcements

0 Replies

1444432 Views

Last post by Ludovic
2025-06-25 16:38
UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 - Feedback

Last post by Ludovic « 2026-04-08 10:25
Posted in 1.6.x
Replies: 26
by RudiDeVos » 2025-06-22 21:06 » in 1.6.x

26 Replies

2895521 Views

Last post by Ludovic
2026-04-08 10:25
Important: Please update to latest version before to create a reply, a topic or an issue

Last post by Ludovic « 2023-09-21 10:06
Posted in Announcements

by Ludovic » 2023-09-21 10:06 » in Announcements

0 Replies

1163600 Views

Last post by Ludovic
2023-09-21 10:06

Topics

Replies

Views

Last post

XP pro to XP home authentication problem

Last post by Marscha « 2005-04-19 05:52
Replies: 2
by vncnoob » 2005-04-13 03:26

2 Replies

8822 Views

Last post by Marscha
2005-04-19 05:52
ok, stupid question time...

Last post by Marscha « 2005-04-18 05:36
Replies: 1
by sgt-d » 2005-04-16 08:28

1 Replies

8462 Views

Last post by Marscha
2005-04-18 05:36
Win98se VNC Server + w2k PDC

Last post by sgt-d « 2005-04-14 19:46
Replies: 4
by Flips » 2005-04-13 20:41

4 Replies

16799 Views

Last post by sgt-d
2005-04-14 19:46
Configuration file (acl)

Last post by Marscha « 2005-04-14 06:32
Replies: 1
by Tim » 2005-04-13 07:15

1 Replies

10080 Views

Last post by Marscha
2005-04-14 06:32
Password oddity

Last post by Marscha « 2005-04-11 16:03
Replies: 1
by Guest » 2005-04-11 15:29

1 Replies

7662 Views

Last post by Marscha
2005-04-11 16:03
possible solution for ms login under win9x

Last post by sgt-d « 2005-04-10 17:40
Replies: 5
by sgt-d » 2005-04-07 05:16

5 Replies

18533 Views

Last post by sgt-d
2005-04-10 17:40
ms login vs. win98se

Last post by sgt-d « 2005-04-06 21:02
Replies: 8
by sgt-d » 2005-04-05 17:40

8 Replies

22663 Views

Last post by sgt-d
2005-04-06 21:02
worked before, now doesn't

Last post by Marscha « 2005-03-30 06:45
Replies: 10
by steve295 » 2005-03-22 18:13

10 Replies

24483 Views

Last post by Marscha
2005-03-30 06:45
Some passwords fail to auth/lock account/crash vncserver

Last post by Marscha « 2005-03-29 07:44
Replies: 1
by dlom » 2005-03-25 17:04

1 Replies

7066 Views

Last post by Marscha
2005-03-29 07:44
VNCVIEWER.EXE and MS authentication

Last post by Volleyknaller « 2005-03-11 12:21
Replies: 6
by sbostedor » 2005-02-21 17:58

6 Replies

19271 Views

Last post by Volleyknaller
2005-03-11 12:21
ACLUI.DLL

Last post by Marscha « 2005-03-08 17:30
Replies: 19
by Stephen » 2005-01-27 19:37

19 Replies

51289 Views

Last post by Marscha
2005-03-08 17:30
MSLogon II and NT4

Last post by Marscha « 2005-03-08 17:27

by Marscha » 2005-03-08 17:27

0 Replies

7172 Views

Last post by Marscha
2005-03-08 17:27
Trying to set UltaVNC up like TightVNC...

Last post by Marscha « 2005-03-01 12:33
Replies: 1
by timatlee » 2005-02-28 23:26

1 Replies

13683 Views

Last post by Marscha
2005-03-01 12:33
some questions

Last post by RudiDeVos « 2005-02-21 18:55
Replies: 4
by harelg » 2005-02-20 14:49

4 Replies

11905 Views

Last post by RudiDeVos
2005-02-21 18:55
MS-LOGON -How the heck question

Last post by Marscha « 2005-02-18 07:28
Replies: 3
by Immortal_Creations » 2005-02-16 21:24

3 Replies

10649 Views

Last post by Marscha
2005-02-18 07:28
MS Logon & Rules

Last post by Marscha « 2005-02-14 09:24
Replies: 1
by Brian51974 » 2005-02-14 07:48

1 Replies

7606 Views

Last post by Marscha
2005-02-14 09:24
Merged authSSP.dll and SecurityEditor.dll

Last post by Marscha « 2005-02-04 07:57
Replies: 3
by Marscha » 2005-01-31 13:10

3 Replies

12848 Views

Last post by Marscha
2005-02-04 07:57
New MS-Logon v3 - No longer new!

Last post by Terriff « 2005-01-28 23:06
Replies: 15
by Marscha » 2004-10-18 08:19

15 Replies

104390 Views

Last post by Terriff
2005-01-28 23:06
Old MSLogon

Last post by mfo2 « 2005-01-21 16:12
Replies: 3
by mfo2 » 2005-01-21 10:59

3 Replies

11385 Views

Last post by mfo2
2005-01-21 16:12
MSLOGON3 and secured computers

Last post by mfo2 « 2005-01-21 08:20
Replies: 2
by mfo2 » 2005-01-20 10:18

2 Replies

9512 Views

Last post by mfo2
2005-01-21 08:20
MS Logon V3 how to

Last post by redge « 2004-12-16 14:17
Replies: 2
by redge » 2004-12-16 00:32

2 Replies

9526 Views

Last post by redge
2004-12-16 14:17
Mslogon Windows98SE

Last post by Marscha « 2004-12-16 06:57
Replies: 10
by teosuper » 2004-12-13 11:23

10 Replies

26319 Views

Last post by Marscha
2004-12-16 06:57
MSLogon with special password fails

Last post by Marscha « 2004-12-10 06:42
Replies: 2
by Guest » 2004-09-02 07:49

2 Replies

34104 Views

Last post by Marscha
2004-12-10 06:42
Problems with the Send Control-Alt-Delete to host button

Last post by RudiDeVos « 2004-12-09 17:55
Replies: 1
by tonypaulina » 2004-12-09 17:28

1 Replies

7796 Views

Last post by RudiDeVos
2004-12-09 17:55
MS Logon + AD on W2000

Last post by Marscha « 2004-11-30 16:30
Replies: 1
by stephane » 2004-11-30 11:12

1 Replies

7995 Views

Last post by Marscha
2004-11-30 16:30
Win 9x and MSLogon Test19_13

Last post by Marscha « 2004-11-22 17:43
Replies: 1
by Guest » 2004-11-22 13:39

1 Replies

6575 Views

Last post by Marscha
2004-11-22 17:43
Bug MS LOGON 3

Last post by Marscha « 2004-11-19 10:09
Replies: 2
by balubeto » 2004-11-18 15:44

2 Replies

9403 Views

Last post by Marscha
2004-11-19 10:09
"VNCViewer BMPFlasher" window blocked

Last post by balubeto « 2004-11-17 15:34
Replies: 11
by balubeto » 2004-11-14 12:56

11 Replies

28318 Views

Last post by balubeto
2004-11-17 15:34
MS Logon Domain priviliges?

Last post by Marscha « 2004-11-15 07:01
Replies: 2
by remain » 2004-11-12 19:43

2 Replies

10304 Views

Last post by Marscha
2004-11-15 07:01
MS Logon and Ultr@VNC v1.0.0 RC18

Last post by Marscha « 2004-11-15 06:48
Replies: 9
by balubeto » 2004-11-05 17:44

9 Replies

25730 Views

Last post by Marscha
2004-11-15 06:48
Win95 requires username

Last post by Marscha « 2004-11-11 06:40
Replies: 1
by Stella » 2004-11-10 09:57

1 Replies

7168 Views

Last post by Marscha
2004-11-11 06:40
MSLogon cannot accept username with spaces

Last post by Marscha « 2004-11-08 06:56
Replies: 1
by khsoh » 2004-10-13 12:49

1 Replies

6371 Views

Last post by Marscha
2004-11-08 06:56
Help Request with Logon

Last post by Marscha « 2004-11-04 07:18
Replies: 7
by kb-matrix » 2004-10-29 17:36

7 Replies

20244 Views

Last post by Marscha
2004-11-04 07:18
Blocking authenticated Administrator local

Last post by Marscha « 2004-11-01 07:21
Replies: 3
by asus61 » 2004-10-22 12:27

3 Replies

9434 Views

Last post by Marscha
2004-11-01 07:21
Ms-logon 3

Last post by RudiDeVos « 2004-10-26 15:15
Replies: 1
by pauljac » 2004-10-26 13:42

1 Replies

7122 Views

Last post by RudiDeVos
2004-10-26 15:15
Getting started?

Last post by Marscha « 2004-10-25 08:32
Replies: 1
by xcastrox » 2004-10-25 02:10

1 Replies

7115 Views

Last post by Marscha
2004-10-25 08:32
windows profiles/user and different uvnc passwords?

Last post by Marscha « 2004-10-25 08:18
Replies: 1
by ckoderer » 2004-10-22 13:41

1 Replies

7023 Views

Last post by Marscha
2004-10-25 08:18
Windows Authentication pass through

Last post by Marscha « 2004-10-25 07:20
Replies: 1
by pikeman » 2004-10-20 21:56

1 Replies

7821 Views

Last post by Marscha
2004-10-25 07:20
MS logon and Java viewer

Last post by Marscha « 2004-10-18 07:55
Replies: 3
by musicman88 » 2004-09-13 19:57

3 Replies

11717 Views

Last post by Marscha
2004-10-18 07:55
Fix for New MS-Logon v2: new authSSP.dll

Last post by Marscha « 2004-10-08 06:29
Replies: 8
by Marscha » 2004-08-20 14:03

8 Replies

21965 Views

Last post by Marscha
2004-10-08 06:29
Disable File Transfer, Group 3 (Read only user)

Last post by UltraSam « 2004-10-07 11:57
Replies: 1
by Guest » 2004-10-07 11:32

1 Replies

7650 Views

Last post by UltraSam
2004-10-07 11:57
RC_19 Test Auth.dll not found

Last post by Pitbull « 2004-10-06 16:59
Replies: 4
by Pitbull » 2004-10-06 16:29

4 Replies

10442 Views

Last post by Pitbull
2004-10-06 16:59
Syntax for MS Login

Last post by Marscha « 2004-10-06 07:16
Replies: 5
by TomP » 2004-09-09 19:13

5 Replies

14142 Views

Last post by Marscha
2004-10-06 07:16
MS-Logon and VNCviewer command line

Last post by Marscha « 2004-09-30 07:32
Replies: 1
by sharpsone » 2004-09-30 04:36

1 Replies

7224 Views

Last post by Marscha
2004-09-30 07:32
SSPI Authentication

Last post by Marscha « 2004-09-30 07:29
Replies: 3
by JohnPeacock » 2004-09-02 14:08

3 Replies

15402 Views

Last post by Marscha
2004-09-30 07:29
Windows XP SP2 And groups

Last post by Arbeider « 2004-09-29 09:25
Replies: 10
by Arbeider » 2004-09-24 05:46

10 Replies

27121 Views

Last post by Arbeider
2004-09-29 09:25
helpdesk?

Last post by Marscha « 2004-09-27 15:04
Replies: 1
by juul » 2004-09-27 10:51

1 Replies

6019 Views

Last post by Marscha
2004-09-27 15:04
MS-Logon Feedback on WXP SP1

Last post by LouisJJames « 2004-09-23 12:14
Replies: 2
by LouisJJames » 2004-09-23 02:17

2 Replies

7731 Views

Last post by LouisJJames
2004-09-23 12:14
[topic=637][/topic]

Last post by larjohns « 2004-09-22 16:58
Replies: 8
by larjohns » 2004-09-15 14:22

8 Replies

19577 Views

Last post by larjohns
2004-09-22 16:58
Clarification of Registry Entry for New MSLogon-2

Last post by Marscha « 2004-09-22 15:29
Replies: 1
by LouisJJames » 2004-09-22 12:51

1 Replies

7630 Views

Last post by Marscha
2004-09-22 15:29

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