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
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There was a problem to vote, it is solved now! Thanks in advance!

2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
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Debug Assertion Failed

Developers may discuss here
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kdh4318
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Posts: 13
Joined: 2024-11-12 01:17

Debug Assertion Failed

Post by kdh4318 »

After successfully building winvnc, the followoing error occurs when running the generated winvnc.exe, why? I didn`t touch the code.
Additionally, the recent version on Github has a completely new UI change. Thank you for the upgrade.

Debug Assertion Failed!

Program
C:\Users\Desktop\VNC\winvnc\winvnc\x64\Debug\winvnc.exe
File: minkernel\crts\ucrt\inc\corecrt_internal_string_templates.h
Line: 81

Expression: (L "Buffer is too small" && 0)

For information on how your program can cause an assertion failure, see the Visual C++ documentation on asserts.

(Press Retry to debug the application)
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Rudi De Vos
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Re: Debug Assertion Failed

Post by Rudi De Vos »

Some secure functions like strcpy_s give this error when the destination is to small

Can you debug and see where in the code this error come from.

The recent version is still work in progress, a lot of things changed...
if you find errors like this please try to find the origin using the "Press retry"
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