Sigil is not responding
 

Hello to everyone :)

I am new to the forum and to Sigil. I've just installed the latest version of Sigil 1.4.3 critical-fix-release.
After the first start of the program, when I try to open it again, the result is always the same, "not responding". I also had an attempt in uninstalling and re-installing Sigil. The same version. It didn't work.
The OS is Windows 10 64 bit.

Is there anyone who experimented the same problem?
Is there any solution?
:help:

Thank you
Santa

Here are things to try:

1. rename your "sigil.ini" file that is in your Sigil Preferences Folder to something else as it can get corrupted and prevent start-up

2. perform a safe restart of your machine to disable all third-party os extensions that might be interfering. If that works, then we will ned to track down the misbehaving extension by systematic trial and error.

3. Temporarily disable your AntiVirus software as it can interfere with Sigil. If Sigil works when your AV is off, then figure out how to tell your AV to leave Sigil alone.

4. Make sure you have updated to the very latest versions of your video driver.

I'm not entirely clear on what is actually happening. Does Sigil open? Can you see the Sigil window? Where are you seeing the "not responding" message?

Kevin's suggestions are valid regardless of the answers to the above.