🧩 Fixing regsvr32 DLL Errors on Wine — And Fighting My System Along the Way

I sat down with a simple goal: run a Windows application through Wine on my Linux setup. But of course, the day had other plans for me.

Today was one of those days.

Post by @kevinmarville@mastodon.social

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The Error: regsvr32 Failed to Load DLL 1cuin.dll

I ran into this cryptic error while trying to register a DLL:

regsvr32: Failed to load DLL '1cuin.dll'

Right in the middle of debugging, my PC froze. Repeatedly. At one point, the screen went black, the fans ramped up, and I thought I had lost everything.

My CPU and GPU were running hot — probably hitting threshold limits. I had too many tools open. There was Wine, a terminal flood of logs, and Firefox with over 10 tabs. OBS was even running in the background. Not ideal.

watch sensors #After restarted in safe mode. I monitored temps. Killed heavy background tasks. Let the system cool down and then ran Wine in a lightweight window manager session (Openbox instead of GNOME)


sudo apt update
sudo apt install mesa-utils

sudo apt install xserver-xorg-video-intel #for Intel Driver

I had to be patient. After a few restarts, I got Wine running smoothly. That stubborn DLL finally registered.

Then, for smooth experience, I recommend this https://linuxcapable.com/how-to-install-playonlinux-on-ubuntu-linux/