topic Error editing ModelState - Failed to launch Excel. - Inventor Professional 2026, Microsoft 365 in Inventor Forum

Error editing ModelState - Failed to launch Excel. - Inventor Professional 2026, Microsoft 365

guilherme_leiteRTJV4 — Tue, 02 Sep 2025 17:33:26 GMT

I am trying to edit a part that has a few model states. I worked just earlier today on it, now I can't change anything, here are the error:

"Excel installation is required for this operation. Failed to launch Excel."
I have Excel installed and working.
Have anyone experienced that?
Closed and opened Inventor, restarted my computer, nothing worked. I had to restore an old version file.
Inventor Professional 2026, Microsoft 365

@guilherme_leiteRTJV4 Your post title was modified to add the product name and version and to increase findability - CGBenner

Re: Error editing ModelState - Failed to launch Excel. - Inventor Professional 2026, Microsoft 365

johnsonshiue — Wed, 03 Sep 2025 16:55:16 GMT

Hi! It seems that the Model States table is corrupted. It cannot be edited. Unfortunately, I am not aware of a way to salvage the data. It will need to be recreated

Many thanks!

Re: Error editing ModelState - Failed to launch Excel. - Inventor Professional 2026, Microsoft 365

guilherme_leiteRTJV4 — Wed, 03 Sep 2025 17:26:53 GMT

Hi @johnsonshiue .

Do you know why this could happen?
and how can I prevent this from happening again?

Thanks.

Re: Error editing ModelState - Failed to launch Excel. - Inventor Professional 2026, Microsoft 365

johnsonshiue — Wed, 03 Sep 2025 23:09:45 GMT

Hi! I am sorry I don't know how the corruption happens. It is also possible it is a side effect of fixing the crash without addressing the corruption source. Do you have the last useable, editable copy? Do you remember what you change in between the versions?

Many thanks!

Re: Error editing ModelState - Failed to launch Excel. - Inventor Professional 2026, Microsoft 365

rgiallombardo — Fri, 14 Nov 2025 20:30:06 GMT

Same thing, very simple part, basically a flat washer with 2 model states, just created a couple days ago. I was trying to add text parameters to a model annotation then linked to the model states. Won't let me delete the parameters, edit them, switch model states, won't save-as, etc.

Re: Error editing ModelState - Failed to launch Excel. - Inventor Professional 2026, Microsoft 365

johnsonshiue — Tue, 18 Nov 2025 01:48:09 GMT

Hi! Many thanks for sharing the file! Unfortunately, the Model States table is indeed corrupted. I am not aware of a way to repair the file. Please feel free to escalate the issue with Autodesk Product Support. The project team can take a look to see if there is a way to salvage the data. In the meantime, please find the last saved version from \OldVersions\ folder or a backup file from the PDM system.

Thanks again!

Re: Error editing ModelState - Failed to launch Excel. - Inventor Professional 2026, Microsoft 365

guilherme_leiteRTJV4 — Tue, 18 Nov 2025 10:36:58 GMT

Hi. Are you using a cloud storage? We have Dropbox here, I think this problem has something to do with the cloud backup.

Re: Error editing ModelState - Failed to launch Excel. - Inventor Professional 2026, Microsoft 365

rgiallombardo — Tue, 18 Nov 2025 12:09:00 GMT

We're using Autodesk Vault Pro 2026. I don't think it had anything to do with a backup. The file locked up while I was working on it, toggling between states and updating some parameters.