Is anyone else having trouble with the installation of IDE 2.0.4 getting "stuck" about 45% of the way through?
Hi @merrimacassistant. Thanks for your report. Which operating system are you using (e.g., "Windows")? I'll check it out.
Windows
I just upgraded to 2.0.4 from 2.0.3 with Windows 10. It took a very long time and look like it had stalled, but it eventually got there.
I tried an update to 2.0.4 and didn't have any problem.
@merrimacassistant did you do an update by clicking the "DOWNLOAD" button on the notification shown in a previous version of Arduino IDE?:

Or are you installing from a file downloaded directly from the "Software" page
@ptillisch Thanks for following up. I have tried it a couple more times, but it “times out” after about 10 minutes. When I open the IDE and click “Download,” it acknowledges it already has the Download and then asks me to choose “Close and Install.” Which downloaded files would I need to delete for it to start fresh? If I can’t get this 2.0.4 to work, I’ll stick with 2.0.3 for now.
Is there any error message, etc. when that happens? If so, please post it here.
It is cached here:
C:\Users\<username>\AppData\Local\arduino-ide-updater\)
(where <username> is your Windows username)
You can delete the whole folder if you like.
Thanks, for the guidance. I was able to remove the "arduino-ide-updater" folder and re-download. [Strangely, when I looked for the file in the file structure as you suggested, it was not there. But when I searched for "arduino-ide-updater" within c:, it appeared exactly where you said it would, as though it was somehow hidden from view.]
When I attempted to install, I got the same error message as I did previously:
"Arduino IDE cannot be closed. Please close it manually and click Retry to continue."
I tried to close ArduinoIDE from the bottom task bar by clicking "close window," but nothing closed. I then went to the Task Manager to force a close of Arduino IDE, but it closed out of the installation window entirely, perhaps not surprisingly.
I opened the IDE again and started the install again, and when I got to the same message:" Arduino IDE cannot be closed. Please close it manually and click Retry to continue," I clicked "Cancel," and got the message "Failed to uninstall old app files. Please try running the installer again."
I opened the IDE again and started the install again, and when I got to the same message: "Arduino IDE cannot be closed. Please close it manually and click Retry to continue," I clicked "Retry," and it just "grinded" again for several minutes, before coming up with the same error message.
There are a couple possible issues I can think of:
- I have Dropbox, which syncs with most of my file structure. When I initially did the install, I got several Dropbox messages.
- My file structure for ArduinoIDE, INO sketch files, & Libraries are a bit "all over the place." I am considering saving my sketches, and then deleting all my Arduino files, then reinstalling everything, including libraries from scratch. ptillisch, is that a good idea, or a bad idea? If "good idea," do you have any recommendations to make it go smoothly?
The Arduino IDE developers are tracking this bug here:
If you visit that link, you will see some workarounds mentioned in the discussion thread. Unfortunately I have never been able to reproduce this fault so I haven't verified them, but the affected users report it does work.
I wouldn't expect it to fix the problem. This error is coming from the general purpose NSIS installer system, which doesn't know or care anything about your libraries.
I was also having issues. But not sure the exact same.
I noticed that even though it installed, and even first ran from end of setup with 2.0.4. When I clicked the app in the start menu to restart at a later time, it was 2.0.3 and gave me the update popup again. Rinse and repeat.
If you checked the installed apps it shows two versions, one named without a version number, the other named with the version appended 2.0.4. I then selected the unversioned one and uninstalled. This seems to have fixed my issue.
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