General help

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

2025-12-14: 1.7.1.X-dev release builds need tests and feedback: https://forum.uvnc.com/viewtopic.php?t=38134

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

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Announcements

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Last post

UltraVNC 1.7.1.X-dev - Feedbacks

Last post by Rudi De Vos « 2026-03-10 22:09
Posted in 1.7.x
Replies: 12
by Rudi De Vos » 2025-12-14 14:07 » in 1.7.x

12 Replies

363860 Views

Last post by Rudi De Vos
2026-03-10 22:09
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

341030 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

124666 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

1069419 Views

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

Last post by Ludovic « 2026-02-15 12:01
Posted in 1.6.x
Replies: 25
by Rudi De Vos » 2025-06-22 21:06 » in 1.6.x

25 Replies

1750023 Views

Last post by Ludovic
2026-02-15 12:01
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

854422 Views

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

Topics

Replies

Views

Last post

ProtonVPN tray window not displayed

Last post by megurrola « 2023-05-17 17:06

by megurrola » 2023-05-17 17:06

0 Replies

5119 Views

Last post by megurrola
2023-05-17 17:06
How to access a Windows PC behind Starlink

Last post by docfxit « 2023-05-14 02:53

by docfxit » 2023-05-14 02:53

0 Replies

5799 Views

Last post by docfxit
2023-05-14 02:53
uvnc2me server offline?

Last post by Rudi De Vos « 2023-05-11 16:36
Replies: 1
by $3v|\| » 2023-05-11 15:05

1 Replies

5491 Views

Last post by Rudi De Vos
2023-05-11 16:36
*.vnc Files dont open

Last post by frannek « 2023-05-09 07:18

by frannek » 2023-05-09 07:18

0 Replies

5536 Views

Last post by frannek
2023-05-09 07:18
How to troubleshoot no connect issues?

Last post by hellovnc « 2023-05-04 17:56
Replies: 2
by hellovnc » 2023-05-04 14:48

2 Replies

8980 Views

Last post by hellovnc
2023-05-04 17:56
Windows login fails after uvnc connectioned

Last post by Rudi De Vos « 2023-05-02 20:38
Replies: 1
by jtech1 » 2023-04-28 16:19

1 Replies

5176 Views

Last post by Rudi De Vos
2023-05-02 20:38
Error reading Protocol Version

Last post by dagdam0r « 2023-04-27 07:03

by dagdam0r » 2023-04-27 07:03

0 Replies

4453 Views

Last post by dagdam0r
2023-04-27 07:03
Different behavior when last client disconnects depending on the IP address

Last post by ScreamMaster « 2023-04-25 15:01

by ScreamMaster » 2023-04-25 15:01

0 Replies

4735 Views

Last post by ScreamMaster
2023-04-25 15:01
PC speed slows down on server side

Last post by Rudi De Vos « 2023-04-22 18:20
Replies: 1
by XABIBASTIDA1 » 2023-04-21 18:52

1 Replies

4841 Views

Last post by Rudi De Vos
2023-04-22 18:20
Center remote view when viewer window is maximized?

Last post by vertigoelectric « 2023-04-19 15:37

by vertigoelectric » 2023-04-19 15:37

0 Replies

5459 Views

Last post by vertigoelectric
2023-04-19 15:37
control only a dedicated program

Last post by petyus « 2023-04-19 09:04

by petyus » 2023-04-19 09:04

0 Replies

4681 Views

Last post by petyus
2023-04-19 09:04
VNC forcing login screen instead of logged-in user desktop

Last post by Rudi De Vos « 2023-04-14 17:34
Replies: 3
by lakes97 » 2023-04-11 19:33

3 Replies

10117 Views

Last post by Rudi De Vos
2023-04-14 17:34
CVE-2023-23415

Last post by Rudi De Vos « 2023-04-11 20:20
Replies: 1
by David4 » 2023-04-11 18:31

1 Replies

6099 Views

Last post by Rudi De Vos
2023-04-11 20:20
Any option for me to not have to type the password every time?

Last post by vertigoelectric « 2023-04-11 14:03
Replies: 2
by vertigoelectric » 2023-04-07 00:12

2 Replies

7245 Views

Last post by vertigoelectric
2023-04-11 14:03
Is there any way to automatically log in without entering ID, PASSWORD?

Last post by Rudi De Vos « 2023-04-10 17:09
Replies: 1
by seungyeon.lee » 2023-04-08 06:22

1 Replies

5945 Views

Last post by Rudi De Vos
2023-04-10 17:09
Unauthorized access attempt?

Last post by Rudi De Vos « 2023-04-03 11:22
Replies: 1
by tiagocoelho2 » 2023-04-02 19:02

1 Replies

5456 Views

Last post by Rudi De Vos
2023-04-03 11:22
UltraVNC works with Active Directory and Group Policies

Last post by FAFsolen « 2023-03-21 07:29

by FAFsolen » 2023-03-21 07:29

0 Replies

4894 Views

Last post by FAFsolen
2023-03-21 07:29
Difference between IdleTimeout and IdleInputTimeout?

Last post by VNCHELP890 « 2023-03-20 17:14
Replies: 3
by Geeorgee » 2023-03-15 00:32

3 Replies

14479 Views

Last post by VNCHELP890
2023-03-20 17:14
Check remote PC VNC status

Last post by VNCHELP890 « 2023-03-20 17:13
Replies: 1
by tim325 » 2023-03-11 06:18

1 Replies

7560 Views

Last post by VNCHELP890
2023-03-20 17:13
Very annoying bug on new laptops

Last post by Sander02 « 2023-03-10 11:05
Replies: 9
by Sander02 » 2022-05-18 11:38

9 Replies

21158 Views

Last post by Sander02
2023-03-10 11:05
MS-Logon I vs vnc password authentication. Which is more secure?

Last post by Sander02 « 2023-03-10 09:23

by Sander02 » 2023-03-10 09:23

0 Replies

5847 Views

Last post by Sander02
2023-03-10 09:23
White screen in the web browser

Last post by rederrene « 2023-03-08 14:20

by rederrene » 2023-03-08 14:20

0 Replies

4879 Views

Last post by rederrene
2023-03-08 14:20
Server Manager is white and some windows won't be displayed

Last post by jgaudray « 2023-03-07 10:01

by jgaudray » 2023-03-07 10:01

0 Replies

5013 Views

Last post by jgaudray
2023-03-07 10:01
Filetransfer - large files are not copied

Last post by StefanH « 2023-03-06 12:32

by StefanH » 2023-03-06 12:32

0 Replies

5067 Views

Last post by StefanH
2023-03-06 12:32
Uvnc2me Suggestions

Last post by rralcantara « 2023-03-02 16:29

by rralcantara » 2023-03-02 16:29

0 Replies

6335 Views

Last post by rralcantara
2023-03-02 16:29
Omit "do you trust this server" request from command line

Last post by casiosmu « 2023-02-28 09:41

by casiosmu » 2023-02-28 09:41

0 Replies

5196 Views

Last post by casiosmu
2023-02-28 09:41
The "AuthHosts=" in the "ultravnc.ini" is no longer working as expected - can anyone help / verify?

Last post by Rudi De Vos « 2023-02-23 12:16
Replies: 5
by Apollo11 » 2023-02-22 19:22

5 Replies

9682 Views

Last post by Rudi De Vos
2023-02-23 12:16
Is there a way to transfer files via the command line?

Last post by ccbamatx « 2023-02-19 17:15
Replies: 5
by adrianh » 2022-11-21 02:31

5 Replies

12702 Views

Last post by ccbamatx
2023-02-19 17:15
Can't Connect - Probably something I am missing

Last post by Snoopy « 2023-02-17 22:48
Replies: 3
by Snoopy » 2023-02-13 06:00

3 Replies

22793 Views

Last post by Snoopy
2023-02-17 22:48
Re: Keyboard/Mouse input cuts out in Hyper V

Last post by Rudi De Vos « 2023-02-11 13:33
Replies: 2
by K3rm1tTh3Fr0g » 2023-02-10 23:37

2 Replies

6970 Views

Last post by Rudi De Vos
2023-02-11 13:33
Saving Multi-Monitor Config

Last post by Rudi De Vos « 2023-02-08 21:16
Replies: 3
by Caldorian » 2023-02-07 17:58

3 Replies

8181 Views

Last post by Rudi De Vos
2023-02-08 21:16
1.4.0.6 will not display unless "Fit to screen, no scrollbars" is slected.

Last post by Rudi De Vos « 2023-02-08 21:14
Replies: 5
by nvidia290 » 2023-02-02 20:17

5 Replies

12069 Views

Last post by Rudi De Vos
2023-02-08 21:14
Install UVNC in a Batch file #2

Last post by Rudi De Vos « 2023-02-05 16:44
Replies: 6
by docfxit » 2023-01-25 17:29

6 Replies

14250 Views

Last post by Rudi De Vos
2023-02-05 16:44
special characters not transferred/displayed

Last post by RedAero « 2023-02-01 10:11
Replies: 2
by blaas » 2023-01-03 12:02

2 Replies

6296 Views

Last post by RedAero
2023-02-01 10:11
VNC port won't stick

Last post by Rudi De Vos « 2023-01-19 17:09
Replies: 7
by docfxit » 2023-01-17 06:34

7 Replies

21637 Views

Last post by Rudi De Vos
2023-01-19 17:09
Does UltraVNC log sessions

Last post by robmo « 2023-01-18 22:22
Replies: 4
by robmo » 2023-01-18 20:14

4 Replies

10870 Views

Last post by robmo
2023-01-18 22:22
VNC server cursor (mouse pointer) blinking

Last post by Avatar255 « 2023-01-16 21:36
Replies: 9
by Avatar255 » 2023-01-08 22:24

9 Replies

18350 Views

Last post by Avatar255
2023-01-16 21:36
Update VNC Viewer and Server

Last post by emp00 « 2023-01-16 19:41
Replies: 2
by emp00 » 2023-01-15 20:15

2 Replies

8554 Views

Last post by emp00
2023-01-16 19:41
UltraVNC Confirmation

Last post by maxzewe « 2023-01-13 11:19

by maxzewe » 2023-01-13 11:19

0 Replies

5257 Views

Last post by maxzewe
2023-01-13 11:19
Authentication rejected

Last post by ertank « 2022-12-26 18:00

by ertank » 2022-12-26 18:00

0 Replies

5864 Views

Last post by ertank
2022-12-26 18:00
UltraVNC Viewer (Listen Mode) not saving Default Connection Options?

Last post by basso « 2022-12-15 16:01
Replies: 1
by ewb » 2022-07-18 21:47

1 Replies

6468 Views

Last post by basso
2022-12-15 16:01
UltraVNC and Windows 11 Update 2022

Last post by Rudi De Vos « 2022-12-01 19:00
Replies: 1
by balubeto » 2022-12-01 17:48

1 Replies

8395 Views

Last post by Rudi De Vos
2022-12-01 19:00
Single-Click "Server Not Running" client issue

Last post by Commander « 2022-11-30 04:29

by Commander » 2022-11-30 04:29

0 Replies

7332 Views

Last post by Commander
2022-11-30 04:29
Certain keys not working on non-English keyboard layout

Last post by RedAero « 2022-11-29 15:35

by RedAero » 2022-11-29 15:35

0 Replies

5548 Views

Last post by RedAero
2022-11-29 15:35
Ultra VNC viewer

Last post by Rudi De Vos « 2022-11-16 20:45
Replies: 2
by virusbcn » 2022-11-07 19:16

2 Replies

7309 Views

Last post by Rudi De Vos
2022-11-16 20:45
uVNC not refreshing screen

Last post by Rudi De Vos « 2022-11-15 20:53
Replies: 8
by ffredyk » 2022-10-05 13:32

8 Replies

26503 Views

Last post by Rudi De Vos
2022-11-15 20:53
REPEATER: how to use COMMENT.TXT to remember server names?

Last post by gwengineering « 2022-11-14 22:29

by gwengineering » 2022-11-14 22:29

0 Replies

6108 Views

Last post by gwengineering
2022-11-14 22:29
White window and windows start menu not displayed correctly

Last post by AnBrink « 2022-11-14 10:38
Replies: 2
by AnBrink » 2022-11-12 07:03

2 Replies

8733 Views

Last post by AnBrink
2022-11-14 10:38
Multiple PCs on same UltraVNC Viewer

Last post by Rudi De Vos « 2022-11-09 18:35
Replies: 1
by armando1486 » 2022-11-09 01:10

1 Replies

7425 Views

Last post by Rudi De Vos
2022-11-09 18:35
single click blocked by windows 10

Last post by Rudi De Vos « 2022-11-06 11:11
Replies: 2
by bond » 2022-11-04 06:58

2 Replies

9788 Views

Last post by Rudi De Vos
2022-11-06 11:11

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