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Fatal Installation Error 1603 - Never ending story

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I get this damned 1603 error too.

This is not the first time that I run in trouble with the installation of Paint.NET.

Perhaps and if it possible it would be good to distribute the app as an zipped archive too.

Because in an other thread I read that paint.NET must _not_ be installed within the installer.

So it would be good if there is an offical download location of such archives.

It would be much more secure to _not_ patch/fix the TrustedInstaller.

I also read the sticky Topic


But the executables are completly diffrent in size. Looks strange...

My executable is ~200kb and the execs in that archive are ~40kb.

So I asume that this execs belongs to Windows Vista or Windows Vista SP1,

The readme doesn't tell anything about the affected Windows Version

Anyway. This fix looks strange and I think it is very strange to replace the

Trusted Installer if the Trusted Installer refuse an installation.

The Readme describes to take the ownership of the whole

"servicing" subdirectory. Why?

I thnk that isn't very recommend and make it not easy to restore the original

righst and behavior of windows.

It should be enough to replace "only" the ownership and perhaps rights of

the TrusteInstaller.exe, shouldn't it?

The readme in that fix says in 5. to search the TrustedInstaller in services.

But in (my) Windows 7 there is _no_ such search box and I can't find

such a service (only TPM). Is TPM the service?

What is the DisplayName of the TrustedInstaller Service?


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You really should just run SFC instead of trying to outsmart a corrupted file.

Perhaps and if it possible it would be good to distribute the app as an zipped archive too.

I'm not going to change the way I distribute Paint.NET because some people have run into trouble with corrupt files, failing hardware, and/or viruses.

Best of luck fixing this.

The Paint.NET Blog: https://blog.getpaint.net/

Donations are always appreciated! https://www.getpaint.net/donate.html


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Hello Rick,

I didn't used that "fix/pach"

and I run sfc with "sfc /scannow" and then rebooted the system.

I also deleted the Paint.NET Subkey under Software (HKCU+HKLM)

But the error ist still upcomming. :-(

They run into trouble when the used that "fix"?

I think that's no wonder ;-)

But with an zip archive there is no system file affected and nobody

should get trouble with corrupt files, because no system files

have to be changed.

Now I don't see any other possibility. What can I do else?


Edited by tjung
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  • 2 months later...

I got the 1603 error whenever I went to install version 3.5.5 on Windows 7 32 bit. I searched around the forums and none of the answers fixed my issue. Finally I checked to see if any other version of paint.net was installed on the machine. Version 3.36 was installed so I uninstalled it. The paint.net 3.5.5 installation worked fine after that.

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