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Can't open files while using Paint.net


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When I start Paint.net version 4.1.4 and select Ctrl-O ( open file) the program does not react anymore.

When I select a file and choose open with paint.net, then I can modify that file in Paint.net and save the file.

PdnRepair.exe did not solve the problem.


The problem started after I installed something.

Uninstalling of that program did not solve the problem.


Versions 4.0 and 4.12 I can't use on the same reason. Version 3.5.11 works good. But there the functionality is not as good as in the 4.1.4 version.


How can I solve this problem??

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2 hours ago, FredF said:

The problem started after I installed something.

Uninstalling of that program did not solve the problem.


To better understand what happened, I think we'll need to know the name of that program.

(September 25th, 2023)  Sorry about any broken images in my posts. I am aware of the issue.

My Gallery  |  My Plugin Pack

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Well, if it was me and I was suspicious that something I'd downloaded was now interfering with the operation of my PC I'd be running a full anti-virus/anti-malware scan.


That is usually the 'solution' suggested by idiots whose first thought is to blame everything going wrong with their computer on such things but in this case, on the evidence presented, it seems justified.


I'd then use a system restore point from before the problem occurred and see if that fixed it. The system can be rolled back if it does not.


I'd also look in what's running at start up. CCleaner is good for this but be careful as that itself, thanks to AVAST, can install unwanted stuff. So perhaps better to use > Run and type msconfig  to get to Startup and see if there is anything there that shouldn't be. I'd also use the small and useful program AutoRuns for the same reason:-




But primarily what I'd suggest doing first is what I suggested for another poster here having a different problem a couple of weeks ago in this thread:--






That is to use System File Checker because the fact that recent PDN versions are now not working yet older ones are suggests a MS .NET Framework problem and that running sfc /scannow may fix it.

Edited by IHaveNoName
spelling, grammar, typos


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Thank you for your reaction IHaveNoName and BoltBait! 


This afternoon I installed Paint.net 4.1.4 again and now the problem is gone!


I really don't know what went wrong.

When the problem occured  I scanned my computer at once with Kaspersky and MalwareBytes, but nothing was found.


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