Unexpected CDB Exit

[Blacktempel]

Hello,

a little ago I've deinstalled Qt 5.6, removed possible leftover directories and installed the newest version 5.7 (Version: Visual Studio 2015 - 64bit)
Expecting to hit a few difficulties, I had an issue right away, which I got fixed after deleting the toolchains.xml file as suggested in this post.

Now my problem is, that when trying to execute the code in debug mode - debug it (default hotkey F5) - I get instantly a very descriptive error.
"Unexpected CDB Exit"
"The CDB process terminated."
Running it works fine, debugging not at all.

I have a totally empty project (default files) without changes - Qt Widgets.

I went through previous posts and google and can't seem to figure out a solution for this error.

Settings - Options:
Kits - Desktop Qt 5.7.0 MSVC2015_64bit

Qt Versions - VS'15 - 64bit

Compilers Auto-detected from 12.0 and 14.0

(x86)
(amd64)
(x86_amd64)
(x86_arm)
(amd_64_arm)

Debuggers Auto-detected:

C:\Program Files (x86)\Windows Kits\8.1\Debuggers\x86\cdb.exe - and x64
C:\Program Files (x86)\Windows Kits\10\Debuggers\x86\cdb.exe - and x64

CMake Auto-detected @Default installation path

I hope someone's able to help me with this issue.

[dannox]

Hi,
I have the same error. Did you get a solution for that?

[mcleary]

I was getting this error yesterday. I found the the CDB version didn't match with the linked UCRT.

I'm using Qt 5.6 to develop my application I found that I need to manually link against ucrt like this

INCLUDEPATH += "C:/Program Files (x86)/Windows Kits/10/Include/10.0.10586.0/ucrt"
LIBS += -L"C:/Program Files (x86)/Windows Kits/10/Lib/10.0.10586.0/ucrt/x64"

And I found that the CDB version need to match the ucrt version. So I am using CDB 10.0.10586.0 now and it is working.

[Blacktempel]

@dannox I did not find a fix for it yet, but I'm going to try @mcleary 's solution and reply if it worked.

[HashTagJF]

I have the same problem. I tried @mcleary 's solution but unfortunately it didn't work for me.

[bitlixi]

I got the same error form. Finally found that some DLL needed is missing. You could click the exe file in DEBUG to find which DLL is missing.

[amfasis]

@bitlixi thanks for the hint, I indeed checked the .exe in debug folder. Turned out my Qt/bin folder had magically forgot Qt5OpenGLd.dll

[Narada]

I had the same problem. I had incorrectly picked the x86 cdb version instead of the x64 version in configuring the kit.

[Diracsbracket]

@mcleary
Just for info: using -L before the library path string is wrong on my Windows 7 system with Qt 5.9.1.

[Diracsbracket]

This post is deleted!

[Christoph Schaefer]

I had the same unexpected CDB Exit since Qt Creator version 4.3. In Qt Creator 4.2.2 CDB works just fine.
The solution for me was uninstalling Python 2.7. It is still a work around for me, because I need Python 2.7 for compiling Qt WebEngine from source. Does somebody have a working solution for having Python 2.7 and Qt Creator 4.5 and CDB installed in parallel?

[Lio2609]

I have the same problem since the big windows 10 update this week.
I have not find a solution yet.
If someone have, it would be great to share. Thanks.

[mrjj]

Hi
Just noticed i have same issue

Thank you windows update \o/

[Sriep]

Yes me too.

I switched from 4.5.0-rc1 to 4.5.0 and it went away. Not sure if that was a coincidence.

[mrjj]

@Sriep
I reinstalled Qt and it also worked again.

[Lio2609]

@mrjj
i just ran the " repare " function of Visual studio 2017 installer and it worked again too.

[Destructor]

My solution of this issue:
I've check my exe by Depends, and... I miss some dll, linked by .lib!
Then I put this DLL into System32 - et voila! CDB work now.

[jsulm]

@Destructor You should not put them into system32 directory - put them in the same directory where you exe is.

[WriterBloke]

@bitlixi's advice worked for me

[xenovas]

same problem.. could someone provide the steps in order to overcome this issue ?