1.2.1.7 viewer crashing when minimized

1.2.1.7 viewer crashing when minimized

Postby andrewk89 » 2018-02-07 02:16

Running UltraVNC Viewer 1.2.1.7 on Windows 7 x64. After minimizing the viewer window, the viewer crashes after a few minutes. every time.

Server is Windows 10 x64 running the same version.

Viewer options are
[list=][*]Hextile[/*]
[*]Full Colors[/*]
[*]Auto size / 90% scaling[/*][/list]

Forget which version I was running before upgrading. Either 1.2.1.6 or 1.2.1.2 on both client and server. Using the same settings, neither viewer had this issue.

Here's what I pulled out of the Event Viewer
Code: Select all
Faulting application name: vncviewer.exe, version: 1.2.1.7, time stamp: 0x5a57b793
Faulting module name: vncviewer.exe, version: 1.2.1.7, time stamp: 0x5a57b793
Exception code: 0xc0000005
Fault offset: 0x000000000007f30d
Faulting process id: 0x1d48c
Faulting application start time: 0x01d3a07a9606d92c
Faulting application path: C:\Misc\Software\vncviewer.exe
Faulting module path: C:\Misc\Software\vncviewer.exe
Report Id: 4a038f2c-0c70-11e8-8de8-34e6d73ce7fe
Last edited by andrewk89 on 2018-02-08 01:51, edited 1 time in total.
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Re: 1.2.1.7 viewer crashing when minimized

Postby Rudi De Vos » 2018-02-07 19:12

Anyone else can repeat this issue.

Viewer crash after been minimized for a while ?
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Re: 1.2.1.7 viewer crashing when minimized

Postby TeddyN » 2018-02-07 21:58

Rudi De Vos wrote:Anyone else can repeat this issue.
Viewer crash after been minimized for a while ?


Yes. I had reported this under 1.2.1.7 thread several days ago. I have 4 PCs with Win 7 Pro 64, and installed UVNC using exe-installer to them. I had no problem with 1.2.1.6.

With 1.2.1.7, when the remote window is minimized, UVNC crashes on Viewer side. My impression is that the remote window also crashes when it is not minimized but inactive, but I'm not sure.

When Server side is 1.2.1.6 but Viewer is 1.2.1.7, Viewer doesn't crash but sometimes the connection is lost thouth it can be reconnected.

Hope my info helps.
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Re: 1.2.1.7 viewer crashing when minimized

Postby Rudi De Vos » 2018-02-08 22:27

Let's see if i can repeat it in debug mode ..
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Re: 1.2.1.7 viewer crashing when minimized

Postby ferngesteuert » 2018-02-20 07:17

I can also reproduce issue.
Host/Server is windows 10 and Viewer runs on windows 7.

Reproduced with:
1) Start connection and switch to full screen
2) restore window (top bar)
3) minimize viewer and wait a few minutes


It viewer is minimized and restored within seconds it works, but as soon as it minimized for a while it crashes on restore window.

Hope a fix can be provided.

regards, Michael
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