topic Re: Missing Qt6Widgets.dll in Fusion Support Forum

Missing Qt6Widgets.dll

schultz.rick2 — Sat, 30 Mar 2024 13:18:28 GMT

Anyone have success fixing or replacing a missing Qt6Widgets.dll file?

I have been having some weird connection errors while working online. Randomly Fusion will drop its online connection and usually comes back on. I have tested my network and I can say that the issue does not appear to be with my actual network as its running as it should.

last night I had the problem and I was not able to reconnect. I went a chose repair fusion from the dashboard. The repair process failed and I lost the Qt6Widgets.dll in the process.

Now I am unable to launch Fusion. When I attempt to launch fusion I get the missing dll file error and a suggestion that reinstalling Fusion may fix it.

the screen shot of the error is attached.

what is the correct procees to fix this problem?

Thank you,

Rick

Re: Missing Qt6Widgets.dll

g-andresen — Sat, 30 Mar 2024 14:40:54 GMT

Hi,

might help

günther

Re: Missing Qt6Widgets.dll

schultz.rick2 — Sat, 30 Mar 2024 14:54:22 GMT

Will uninstall effect file data and team member connections?

Re: Missing Qt6Widgets.dll

pdifflipp — Tue, 09 Apr 2024 10:51:28 GMT

I am having the same exact problem, it was running fine yesterday afternoon, now this morning I am getting the Qt6Widgets.dll window

Re: Missing Qt6Widgets.dll

schultz.rick2 — Tue, 09 Apr 2024 13:11:47 GMT

@pdifflipp

As others have suggested,

I would try uninstalling fusion and reinstalling fusion. It worked for my situation. There are a few hidden files that may need to be deleted after the uninstall, prior to reinstalling fusion.

I believe there are posted links to resources posted earlier in this thread.

If you cant find those I would follow the Autodesk guidelines for uninstall and reinstalling.

Rick

Re: Missing Qt6Widgets.dll

pdifflipp — Tue, 09 Apr 2024 14:10:13 GMT

Thanks, Rick!
I did try uninstalling then reinstalling but received an error message while it was installing. I posted the log file . I am guessing I might have a permissions problem because of our IT department.
Thanks again, Paul

Re: Missing Qt6Widgets.dll

schultz.rick2 — Tue, 09 Apr 2024 14:33:13 GMT

Yea if you have an IT department I would have them help you though the
process.

I have a single seat license for my small shop. No IT department.

Re: Missing Qt6Widgets.dll

rocycling — Mon, 17 Feb 2025 05:48:41 GMT

Has someone found a fix for this? As of a few days ago I'm having the same issue. Attempting to load the service utility shows the same error. Re installing Fusion did not fix the problem.

Re: Missing Qt6Widgets.dll

alexmagnetti — Mon, 14 Apr 2025 13:38:22 GMT

same problem

Re: Missing Qt6Widgets.dll

dgutierrezFU7F8 — Fri, 02 May 2025 09:48:08 GMT

I can't open de Service Utility command to repair Fusion 360, when I try it, have the same error with dll s.

Re: Missing Qt6Widgets.dll

justinnorris2010 — Fri, 01 Aug 2025 23:58:41 GMT

anyone solve there issue i am having same problem now