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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310 topics

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Announcements

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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

776415 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

498059 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

1537090 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

3362176 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

1259824 Views

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

Topics

Replies

Views

Last post

MS logon II is not activate after a installation/verysilent

Last post by darius « 2006-10-08 19:18
Replies: 2
by darius » 2006-09-27 20:24

2 Replies

12047 Views

Last post by darius
2006-10-08 19:18
Failed to connect to server after a short time

Last post by Zyrex « 2006-10-04 11:46
Replies: 2
by jarekp » 2006-10-04 07:24

2 Replies

15171 Views

Last post by Zyrex
2006-10-04 11:46
Unknown authentication scheme

Last post by Marscha « 2006-09-27 08:08
Replies: 5
by soaro77 » 2006-07-18 00:32

5 Replies

38410 Views

Last post by Marscha
2006-09-27 08:08
If machine loses connection to DC, won't authenticate login

Last post by Marscha « 2006-09-27 08:04
Replies: 3
by AKL-MFCU » 2006-08-12 15:01

3 Replies

14667 Views

Last post by Marscha
2006-09-27 08:04
MSlogon authentication

Last post by Marscha « 2006-09-27 07:57
Replies: 1
by csk026 » 2006-09-18 13:21

1 Replies

10134 Views

Last post by Marscha
2006-09-27 07:57
Authentication failed when user account must change password

Last post by Marscha « 2006-09-27 07:44
Replies: 1
by tjwielenga » 2006-09-22 17:52

1 Replies

10379 Views

Last post by Marscha
2006-09-27 07:44
Wrong Password Answer from serwer - the password is correct

Last post by QuarkZ « 2006-08-26 15:45
Replies: 11
by Liszek » 2006-08-23 17:25

11 Replies

39651 Views

Last post by QuarkZ
2006-08-26 15:45
Question to MS logon I

Last post by redge « 2006-08-23 23:18
Replies: 1
by forestchen » 2006-08-23 07:33

1 Replies

11293 Views

Last post by redge
2006-08-23 23:18
MS logon - viewer from commandline

Last post by redge « 2006-08-12 02:20
Replies: 1
by xxxfox » 2006-07-21 07:21

1 Replies

9882 Views

Last post by redge
2006-08-12 02:20
Thrown off domain at first wrong password attempt

Last post by Marscha « 2006-08-10 11:31
Replies: 1
by michel coene » 2006-08-09 12:39

1 Replies

10592 Views

Last post by Marscha
2006-08-10 11:31
User Accounts

Last post by T.Lancer « 2006-08-06 21:08
Replies: 2
by T.Lancer » 2006-08-06 08:49

2 Replies

10933 Views

Last post by T.Lancer
2006-08-06 21:08
Server has upgraded to UVNC 1.0.2 - Can't connect U1.0.1

Last post by Colin_Simm « 2006-07-29 17:30
Replies: 4
by Colin_Simm » 2006-07-28 11:36

4 Replies

16675 Views

Last post by Colin_Simm
2006-07-29 17:30
Limiting access Windows 2000 Domain

Last post by Zythan « 2006-07-13 23:01
Replies: 7
by robbo007 » 2006-05-26 07:38

7 Replies

22578 Views

Last post by Zythan
2006-07-13 23:01
Pushing out in a Domain Environment with MSLOGON Groups

Last post by stranger73 « 2006-07-08 20:18
Replies: 8
by Kevin » 2005-03-16 14:58

8 Replies

27113 Views

Last post by stranger73
2006-07-08 20:18
MSLogonAC problem

Last post by bilbus « 2006-07-06 09:43
Replies: 2
by bilbus » 2006-06-18 19:16

2 Replies

11372 Views

Last post by bilbus
2006-07-06 09:43
Using MSLOGONII from Domain to Workgroup

Last post by redndahead « 2006-06-27 18:44
Replies: 4
by redndahead » 2006-06-23 00:27

4 Replies

18044 Views

Last post by redndahead
2006-06-27 18:44
Is it possible to use (CTRL-ALT-F5) with MSLogon II?

Last post by Misses Nexmetch « 2006-06-20 06:59
Replies: 2
by Misses Nexmetch » 2006-06-19 09:06

2 Replies

12255 Views

Last post by Misses Nexmetch
2006-06-20 06:59
Compiling MSLogonACL

Last post by Sentax « 2006-06-16 17:56
Replies: 2
by Sentax » 2006-06-14 23:55

2 Replies

12650 Views

Last post by Sentax
2006-06-16 17:56
Error after installing and making a test connection

Last post by mikech « 2006-06-01 20:43
Replies: 6
by mikech » 2006-05-30 22:16

6 Replies

22019 Views

Last post by mikech
2006-06-01 20:43
After interrupted installation -> can´t log on

Last post by Marscha « 2006-06-01 06:23
Replies: 4
by abi » 2006-05-30 17:10

4 Replies

15276 Views

Last post by Marscha
2006-06-01 06:23
New to the MS thing...

Last post by redge « 2006-05-29 18:24
Replies: 6
by jomtones » 2006-05-26 19:47

6 Replies

19231 Views

Last post by redge
2006-05-29 18:24
*Newbie* MS Logon II

Last post by Marscha « 2006-05-29 06:40
Replies: 1
by moviebuff03 » 2006-05-27 14:16

1 Replies

9444 Views

Last post by Marscha
2006-05-29 06:40
MS LogonII check OS XP Home vs XP Professionnal from code ?

Last post by redge « 2006-05-28 19:28
Replies: 2
by redge » 2006-05-10 02:48

2 Replies

16006 Views

Last post by redge
2006-05-28 19:28
Big Noob Question

Last post by Marscha « 2006-05-18 08:01
Replies: 1
by yourwar » 2006-05-18 01:14

1 Replies

9840 Views

Last post by Marscha
2006-05-18 08:01
MS LOGON I/II password vuln / Using Encryption

Last post by Marscha « 2006-05-16 07:17
Replies: 1
by tmorrisnc » 2006-05-15 18:41

1 Replies

9712 Views

Last post by Marscha
2006-05-16 07:17
NTLM - how to connect to VNC WITHOUT DOMAIN\USERNAME + PASS

Last post by Marscha « 2006-05-10 06:23
Replies: 8
by halpro » 2005-11-11 07:34

8 Replies

30291 Views

Last post by Marscha
2006-05-10 06:23
why mslogon II security editor does not list file transfer ?

Last post by Marscha « 2006-05-08 06:13
Replies: 3
by gchu » 2006-05-04 15:05

3 Replies

13935 Views

Last post by Marscha
2006-05-08 06:13
"authssp.dll" not found warning

Last post by kevotron « 2006-04-20 16:02
Replies: 1
by kevotron » 2006-04-20 14:21

1 Replies

9787 Views

Last post by kevotron
2006-04-20 16:02
Authentication issues.

Last post by redge « 2006-04-13 18:56
Replies: 1
by sims » 2006-04-13 14:20

1 Replies

12988 Views

Last post by redge
2006-04-13 18:56
Missing auth.dll after UltraVNC-Server-Upgrade

Last post by CCETech « 2006-04-11 17:40
Replies: 2
by Mang » 2005-12-30 13:14

2 Replies

12669 Views

Last post by CCETech
2006-04-11 17:40
Cannot connect to VNC Server

Last post by redge « 2006-04-06 01:18
Replies: 1
by schanti » 2005-09-20 07:55

1 Replies

14015 Views

Last post by redge
2006-04-06 01:18
VNC authentication failed

Last post by redge « 2006-04-04 00:04
Replies: 6
by MichHK » 2006-03-31 09:20

6 Replies

60067 Views

Last post by redge
2006-04-04 00:04
Authentication Error

Last post by redge « 2006-03-24 18:35
Replies: 3
by Qudeid » 2006-03-23 17:48

3 Replies

14498 Views

Last post by redge
2006-03-24 18:35
Inserting password, UltraVNC windows closed!

Last post by Marscha « 2006-03-16 07:52
Replies: 5
by PaSmE » 2006-03-13 16:47

5 Replies

19203 Views

Last post by Marscha
2006-03-16 07:52
MSlogon text file

Last post by jumpgate2 « 2006-03-14 14:56
Replies: 4
by jumpgate2 » 2006-03-10 14:11

4 Replies

17565 Views

Last post by jumpgate2
2006-03-14 14:56
Cannot login when Win2K is locked

Last post by fullid « 2006-03-13 19:31
Replies: 2
by fullid » 2006-03-10 21:06

2 Replies

11871 Views

Last post by fullid
2006-03-13 19:31
Prob with Domain Admins grp + FastPush (or "Help with ACL")

Last post by VNCNewbie « 2006-03-08 19:07
Replies: 2
by VNCNewbie » 2006-03-08 00:22

2 Replies

11709 Views

Last post by VNCNewbie
2006-03-08 19:07
[Fr] Problème au niveau du Ms logon

Last post by jibbs « 2006-03-06 09:18
Replies: 8
by jibbs » 2006-02-09 09:27

8 Replies

26868 Views

Last post by jibbs
2006-03-06 09:18
[FR] PROBLEME DE CONNEXION

Last post by frjover « 2006-02-26 19:40
Replies: 2
by frjover » 2006-02-26 13:27

2 Replies

13457 Views

Last post by frjover
2006-02-26 19:40
Is MS logon password and username sent as clear text

Last post by raymondb « 2006-02-26 16:49
Replies: 7
by raymondb » 2006-02-25 13:33

7 Replies

29259 Views

Last post by raymondb
2006-02-26 16:49
Run VNCServer for W2K in Power user & User mode

Last post by Marscha « 2006-02-24 07:29
Replies: 2
by joefox853 » 2004-06-01 10:49

2 Replies

11325 Views

Last post by Marscha
2006-02-24 07:29
problem to to access from mac Safari to WIN Xp home VNC ser

Last post by Marscha « 2006-02-23 08:10
Replies: 1
by erin » 2006-02-22 07:27

1 Replies

9781 Views

Last post by Marscha
2006-02-23 08:10
[FR] configuration automatisé lors de l'installation

Last post by jibbs « 2006-02-10 15:44
Replies: 1
by jibbs » 2006-02-07 14:22

1 Replies

11539 Views

Last post by jibbs
2006-02-10 15:44
NTLM Auth - Ultra load prior to being on the domain

Last post by Marscha « 2006-02-01 10:51
Replies: 1
by JDS300 » 2006-01-31 15:11

1 Replies

10058 Views

Last post by Marscha
2006-02-01 10:51
NT, 95, 98 Problems

Last post by Marscha « 2006-01-25 07:34
Replies: 1
by patcho » 2006-01-25 00:46

1 Replies

8521 Views

Last post by Marscha
2006-01-25 07:34
Can't connect if not a user on the system.

Last post by JVH « 2006-01-20 23:18
Replies: 2
by JVH » 2006-01-19 18:39

2 Replies

11785 Views

Last post by JVH
2006-01-20 23:18
Active Directory

Last post by Marscha « 2006-01-18 07:02
Replies: 1
by ccling@ » 2006-01-18 04:52

1 Replies

10213 Views

Last post by Marscha
2006-01-18 07:02
After 60 Days Unanswered Posts Will be Deleted

Last post by bevtech « 2006-01-16 00:25

by bevtech » 2006-01-16 00:25

0 Replies

33489 Views

Last post by bevtech
2006-01-16 00:25
Can I add groups manually to MS Login II?

Last post by bhusk « 2006-01-09 16:25
Replies: 6
by bhusk » 2006-01-04 18:41

6 Replies

22105 Views

Last post by bhusk
2006-01-09 16:25
No supported security type for 3.3 client

Last post by Marscha « 2006-01-02 13:25
Replies: 1
by ZioBr1 » 2006-01-01 12:20

1 Replies

14353 Views

Last post by Marscha
2006-01-02 13:25

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