Solved Qt program fails to run after windows update

[milan]

Hello, my previosly working Qt program fails to run after the windows 10 update.

Updates are:
Security update for Microsoft Windows (KB4284835)
Update for KB2504637
Security update for Adobe Flash Player.

The application fails when attempted to run with error : exited with code -1073741515.

[milan]

The program failed because windows update deleted some dll while update happened. Restoring the dlls again, fixed the issue.

[TobbY]

@milan said in Qt program fails to run after windows update:

1073741515

I searched and found out that the error means
-1073741515 is equal to 0xC0000135 meaning STATUS_DLL_NOT_FOUND.
It means some missing dependencies according to new link. Maybe you can try to reinstall Qt and see if it works.

[milan]

@TobbY . Thanks for your reply, but installing Qt takes a really lot time. If some other solutions exist, it would be better.

[TobbY]

Hi,
I have searched this issue. Mostly people having problem with windows platform plugin, generally happens after windows update.
Usefull link for same case.

[milan]

@TobbY . Reinstalling the Qt creator wont help. I tried once.

[mrjj]

@milan
Hi
Do you mean when you run app in deployment folder, stand alone or via
Creator. Also are you using visual studio compiler ?

[milan]

@mrjj . the program crashes when run from Qt Creator. Yes, I am using MSVC compiler 2017x64

[mrjj]

@milan
Hi
You can try to run a repair via the visual studio installer.
Also check your kits are ok.

[milan]

The program failed because windows update deleted some dll while update happened. Restoring the dlls again, fixed the issue.

[mrjj]

@milan
Hi
For reference, do u know name of that DLL?
and what did u do to fix it ?
(in what folder did u replace (/ put it back in)

[milan]

@mrjj . I reinstalled ftd2xx.dll from the executables from https://www.ftdichip.com/ website

[mrjj]

@milan
ahh and app tried to use/linked to this dll?

[milan]

@mrjj. Yes, I only have run-time error, the building has no problem

[mrjj]

@milan
Yes, it won't fail if dynamic linked so just check to understand why
it died running from creator.
Super. thank you for the feedback.