LTspice won't launch on Windows 11 - Core Ultra 7 255H, exits silently with no error

Hi Fredrick ,

It is likely a mismatch between where LTspice expects to find libraries, or the .ini is corrupted, or there is an old LTspice.ini lurking, etc. My recommendation is to uninstall LTspice using the installer. Then, find all LTspice.ini files and delete them. You can hide backups of the ini around if you have a lot of settings. Reinstall LTspice, but use the "Server" option. Then, be sure to log into Windows as the user who will be using LTspice. I.e., if you were logged in as admin and installed, but you will be logging in as Myself when you use LTspice, make sure you are logged in as Myself. Then, run LTspice. LTspice will unzip the libraries into your local Myself/appdata/ folder and will create a new .ini. This has worked for others with a similar problem.

mike

Hi MStokowski 

Thank for the reply, though despite doing exactly as you told it doesn't seem to work still.

I searched for ini files in the entire C drive and after a while 2 came back in results

I removed them and then did a fresh download and install but it doesn't not launch at all and similar behaviour in system as described in original question. 

Hi Fredrick ,

Hmmm. OK, let's get a verbose install log. Here's how, copy this in the command line, and change paths as appropriate:

msiexec /i "<Path to>\LTspice64.msi" /L*v "<Path to>\MyAppInstall.log

And we can go from there.

Once installed, see where it puts the LTspice.ini file. It should be in /appdata/roaming/ I believe.

mike

 hello MStokowski 

yes found two .ini files directly in the Roaming root: LTspice.ini (9KB), LTspice_20260618_083042.ini (1KB). Attaching the verbose install log as well.LTspiceLog.txt

Hi Fredrick ,

OK, I'll look through the log. What previous versions of LTspice did you have installed, if any?

mike

Hi MStokowski 

there was one updated on june 14th and then on june 17th 

i tried these two and none opened

therefore i downloaded ltspice xvii and currently on that only.

Fredrick

Hi Fredrick ,

New machine? 

mike

Yes, it's IdeaPad Pro 5.

Got in April of this year. 

Hi Fredrick ,

Thanks. Somewhat counterintuitive, but we do find most problems with LTspice installs are related to fact it is a new machine. Did you migrate anything from an old machine?

mike

Hi MStokowski 

No, i have not migrated any data at all.

It's a fresh install of windows right out of the box and whatever programs and softwares been installed on it are as i needed them by downloading from internet.