Revit LT 2026 freezes at startup

[anthonyC5N7P]

Hello!

I've tried about everything. Checked journal logs, complete uninstall and reinstall multiple times, cleaned out my computer, tweaked third-party security software. Whenever I start up a Revit file from our company dropbox, the program opens, but it just freezes and becomes unresponsive, even after having open for a long time. Opening Revit directly without a project file does the same. No error messages are shown. I am on Windows 10. I've also had everything updated in my Autodesk Access account, but the problem still persists.

[Basam.Yousif]

This is most probably a license issue.

Install Autodesk Access program (https://www.autodesk.com/products/autodesk-access/overview) then reboot, log into it, then wait for it to start displaying updates. Install EVERYTHING you see listed there.

Let me know if issue persists. Uninstalling Revit does not solve this kind of problem - or any problem.

[anthonyC5N7P]

All that were listed were two updates to Revit 2023 and AutoCAD LT 2023. 

I have now installed these even though I am currently using Revit LT 2026. 

When opening Revit still, the program just freezes and the program becomes unresponsive. @Basam.Yousif 

[Basam.Yousif]

Log out of Access but don't log back in. Start Revit and see if it asks for login. Either one should make a round-trip to default browser to complete the login. Do that and let it save all the login data. You might need to delete all cookies and try again.

[anthonyC5N7P]

Thanks, I did this but the problem still persists, even after deleting cookies through the browser and restarting. 

I am now seeing a message pop up in Revit right before the program freezes. It shows "The path specified for default family templates is empty or invalid",

Also, for Autodesk Access - I've downloaded this one update, multiple times, but it comes back everytime I open the program... even after re-completing the download.

Let me know your thoughts on what can be occurring? @Basam.Yousif 

[Basam.Yousif]

Let's try these options:

1. Download, unblock, unzip then run the BAT file found in here. This will update (or install if missing) the required components for C++:  https://www.techpowerup.com/download/visual-c-redistributable-runtime-package-all-in-one/

2. Download ALL three items, unblock and install. These update (or install if missing) the required components for .NET 8.

https://builds.dotnet.microsoft.com/dotnet/Runtime/8.0.24/dotnet-runtime-8.0.24-win-x64.exe

https://builds.dotnet.microsoft.com/dotnet/WindowsDesktop/8.0.24/windowsdesktop-runtime-8.0.24-win-x...

https://builds.dotnet.microsoft.com/dotnet/aspnetcore/Runtime/8.0.24/aspnetcore-runtime-8.0.24-win-x...

Reboot and test.

Note: future updates to .NET 8 can be downloaded from (the right side of the screen under "Windows" x64) here:  https://dotnet.microsoft.com/en-us/download/dotnet/8.0

Let me know how it goes.

[anthonyC5N7P]

Issue still persists. It's really weird- it's almost like the program glitches. It just freezes right after the small Revit 2026 logo comes out, then program becomes unresponsive.

[Basam.Yousif]

Wow.

Let's try something else. Go ahead and install Revit 2024 and report back if it works.

[anthonyC5N7P]

Unfortunately, our office runs on LT 2026. If I try that route, I still wouldn't be able to open our files in our team Dropbox. 

Thx for all your suggestions BTW.

[Basam.Yousif]

I'm not suggesting a change to your office version 🙂 

I only want to know if another version works or not. You can uninstall it later.

[anthonyC5N7P]

I did download 2024, and the program there did open fine.

[pkomatlapalli]

Hello, @anthonyC5N7P ,

Did the information provided by @Basam.Yousif  help you and answer your question?

If yes, please click on the "Accept Solution" button on the post(s) that solved your problem. This will assist other community users in finding and benefiting from this information.

If not, please do not hesitate to give an update in this thread so all community members receive an update on the progression of your question, and can suggest next steps that may be helpful for you to achieve what you're looking for.

All the best,

Pavan Kumar | Community Manager

[pkomatlapalli]

Hello, @anthonyC5N7P ,

Just checking in—did the responses shared by @Basam.Yousif  help clarify your question?

If so, please consider clicking the "Accept Solution" button on the post(s) that solved your problem. Doing so helps others in the community easily find useful answers.

If your question still needs more attention, feel free to reply here with an update. This way, other members can jump in with further suggestions or guidance to help you move forward.

All the best,

Pavan Kumar | Community Manager

[anthonyC5N7P · Accepted solution]

@pkomatlapalli 

The response did not solve the issue. I just ended up installing a new PC system to avoid the issue. I suppose we can make this topic closed since it's no longer an issue for me.

Thanks!

[Basam.Yousif]

I think your Windows user profile was corrupt. This have been a common issue lately.

[mari.shimode]

Hi @anthonyC5N7P, thank you for your response. It may not have been the best solution but I’m glad the issue was resolved. If you have any other questions, please feel free to use the Autodesk Community again.