Cannot install Fusion

amospettinger — Fri, 12 Dec 2025 16:48:41 GMT

Hi, hopefully somebody can help me.

I was receiving error messages today when starting fusion, errors about missing files, etc, so I decided to uninstall and then re-install, however I don't think the uninstall worked properly, the uninstaller was just closing immediately. Therefore I decided to delete the files from appdata/local/Autodesk manually, this mainly worked except there was one folder that would not delete, not even in cmd with /f. I was however able to move the folder to another place on my file system, but I still cannot delete it.

Now I am unable to reinstall, I get the message: We are not sure what is preventing installation.

I looked at the Resolving-Installation-Issues weblink but nothing jumped out at me as being the problem. These are the last few lines in my log file:

2025-12-12 16:31:03,025 - MainProcess(6284) - InstallDriver - adsk.dls.streamer.process.process - ERROR :: Exception during processing:
Traceback (most recent call last):
File "R:\src\adsk\dls\streamer\process\process.py", line 1186, in execute
File "R:\src\adsk\dls\streamer\process\deploy_process.py", line 95, in execute_without_errorhandling
File "R:\src\adsk\dls\streamer\process\process.py", line 1116, in execute_without_errorhandling
File "R:\src\adsk\dls\streamer\process\process.py", line 932, in _config_app
File "R:\src\adsk\dls\streamer\process\process.py", line 1928, in _do_installation
File "R:\src\adsk\dls\streamer\process\process.py", line 1689, in wait_threads
File "E:\Jenkins\3P\PYTHON\3.11.1\WIN64_1\Lib\concurrent\futures\thread.py", line 58, in run
File "R:\src\adsk\dls\streamer\process\process.py", line 1809, in execute_tasks
File "R:\src\adsk\dls\streamer\process\process.py", line 415, in _executetasks
File "R:\src\adsk\dls\streamer\windows\platform.py", line 344, in create_launch_items
File "R:\src\adsk\dls\streamer\windows\platform.py", line 444, in _manipulate_shortcuts
File "R:\src\adsk\dls\streamer\manifests.py", line 807, in walk_external_references
File "R:\src\adsk\dls\streamer\windows\platform.py", line 401, in __filevisitor
File "R:\src\adsk\dls\streamer\manifests.py", line 62, in __next__
File "R:\src\adsk\dls\streamer\manifests.py", line 44, in _manifestvalfor
File "R:\src\adsk\dls\streamer\manifests.py", line 239, in _process_template_value
File "R:\src\adsk\dls\streamer\utils.py", line 258, in __call__
File "E:\Jenkins\3P\PYTHON\3.11.1\WIN64_1\Lib\string.py", line 121, in substitute
File "E:\Jenkins\3P\PYTHON\3.11.1\WIN64_1\Lib\string.py", line 114, in convert
File "R:\src\adsk\dls\streamer\manifests.py", line 228, in __getitem__
File "R:\src\adsk\dls\streamer\configuration.py", line 782, in __getitem__
File "R:\src\adsk\dls\streamer\windows\platform.py", line 2068, in __getitem__
File "R:\src\adsk\dls\streamer\platform_base.py", line 108, in __getitem__
IndexError

Thanks

Re: Cannot install Fusion

RajkumarIlanchelian — Fri, 12 Dec 2025 16:58:21 GMT

@amospettinger

Can you please try this?

1. Make sure that Fusion installer is not running in task manager
2. Go to %localappdata%\Autodesk\ then DELETE the following folders – Webdeploy, Web Services, Identity services, Autodesk Fusion 360 ((IF you do not have any other Autodesk products installed, delete the Full Autodesk folder)
3. Delete the shortcut that is used to launch Fusion
4. Restart your machine
5. Do not use the same Fusion installer. Can you please download the installer again
6. Now install again

Re: Cannot install Fusion

amospettinger — Fri, 12 Dec 2025 17:46:39 GMT

Thank you, this worked.

I did also notice that I had an "Autodesk Fusion 360" folder in my %appdata%\Roaming folder too, which I deleted as well, don't know if this made any difference or not but thought I'd mention it in case it helps anyone else.

Thanks again

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Cannot install Fusion

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