Notepad++ 8.3.x won't start anymore
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 As a view versions ago, Notepad 8.3.x won’t start anymore. Therefore, I started it with “-noplugins -nosession” and got the following message.  When I renamed said internal DLL NP++ started, loaded the session but showed no toolbar (and I think no menu) and closed after max. a second. Now I am back to 8.2.1 because there are no problems. Any idea what causes the problem? 
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 @reiner-block said in Notepad++ 8.3.x won't start anymore: Any idea what causes the problem? Yes, breaking changings in the API that plugins will need to recompile against. Remove that plugin, launch the new N++ 8.3 and use Plugin Admin to reinstall the latest version. For more info, see here. Cheers. 
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 @michael-vincent As I said before, it seems nppAutoDetectIndent.dll is an internal DLL and not a plugin. Therefore, “-noplugins” didn’t work. I would have to compile the whole sourcecode of NP++ incl. the DLLs.
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 @reiner-block said in Notepad++ 8.3.x won't start anymore: nppAutoDetectIndent.dll is an internal DLL No it isn’t 
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 @alan-kilborn 
 I found it in the plugins but even after 3 tries to uninstall it, it was still there. So, I deleted the folder inside the plugin folder in the program folder.Now, 8.3.1 won’t start as I described above. :( It seems part of the plugins are inside the program folder and part in the user folder.   I guess I’ve to find a way to clean all up. 
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 I started NP++ 8.3.1 now with the correct parameters “-noplugin -nosession” but it only started for a second and then closed again by itself. :( 
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 Shit! How does NP++ recognizes which plugin folder to use? Because I copied all of <program folder>\plugins to c:\<user>\appdata\roaming\notepad++\plugins But after starting NP++, there were no plugins. I searched for an entry anywhere for a path that points to a plugins folder, but I found nothing. :( 
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 @reiner-block said in Notepad++ 8.3.x won't start anymore: I started NP++ 8.3.1 now with the correct parameters “-noplugin -nosession” but it only started for a second and then closed again by itself. :( Please note that -noplugindoes not equal-noPlugin. Command line options are case sensitive. The command line option you provided does nothing, and thus Notepad++ was still opening with all plugins active – and thus still crashing. For future reference, plugins haven’t been intentionally installed in the ...\AppData\Roaming\Notepad++\pluginsfolder since about 2019 (v7.6.3 was the first stable release after the First Great Plugins Migration – the timestamp of most of your plugins from that folder are from 2015, but a few were from 2020, which surprises me that anything put DLLs there in 2020). Plugins Admin does not install plugin DLLs there. I would recommend not keeping any plugins there; I didn’t realize that it even still worked to have DLLs there (maybe it doesn’t; you don’t say whether any of those worked prior to your v8.3.x problems). I would recommend deleting all the DLL from the AppData hierarchy.
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 @reiner-block said in Notepad++ 8.3.x won't start anymore: Because I copied all of <program folder>\plugins to c:\<user>\appdata\roaming\notepad++\plugins Wrong direction. The <program folder>\plugins\is the right hierarchy for plugin DLLs. and each plugin needs its own eponymous folder.But after starting NP++, there were no plugins. I searched for an entry anywhere for a path that points to a plugins folder, but I found nothing. :( That’s because it’s hardcoded relative to notepad++.exe. 
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 @peterjones said in Notepad++ 8.3.x won't start anymore: Please note that -noplugin does not equal -noPlugin. Command line options are case sensitive. I pointed this out HERE where OP opened an issue. 
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 I had similar symptoms - application stopping after a few seconds after the update to NP++ 8.3.1, although I didn’t get an error pup-up. I found it was caused by the plugin “Task List”. I see you have that plugin too. To resolve, I had to open NP++ with only a blank document (as soon as there is any text it crashes) and uninstall “Task List”. To be able to do this, you may have to delete your session file, “…\AppData\Roaming\Notepad++\session.xml” Any files you had opened in your session will be in “…\AppData\Roaming\Notepad++\backup” so you shouldn’t lose anything. Hope this helps. 

