Home screen/New document window is blank, frozen, or doesn't display

Hi @Veronika5FB1,

Sorry to hear about the trouble you are facing. In addition to @marliton @gianvitulano suggestions, I would also suggest you try the following steps and let us know how it goes:
For Windows:

• Rename the CEP folder to CEP.old from the following location:
  C:\Program Files (x86)\Common Files\Adobe
• If that doesn't help, rename the UXP folder to UXP.old from the following locations:
  C:\Program Files\Common Files\Adobe\
  C:\Program Files (x86)\Common Files\Adobe
  
  

For Mac:

• Rename the CEP folder to CEP.old from the following location:
  /Library/Application Support/Adobe
• If that doesn't help, rename the UXP folder to UXP.old from the following locations:
  /Library/Application Support/Adobe
  ~/Library/Application Support/Adobe
• If that doesn't help either, uninstall the application using the CC Cleaner tool and reinstall from the Creative Cloud Desktop app if not done previously.

Note: Location starting with this "~" sign indicates the User Library, which is hidden. So, you need to copy & paste the exact path in spotlight search or from Finder Menu > Go > Go to Folder > Paste the location in the dialog box like this:

Kindly update the discussion if you still need assistance with it. We'd be happy to help.

Regards,

Anshul Saini

Hi. Please try resetting the preferences: https://helpx.adobe.com/illustrator/user-guide.html/no/illustrator/using/setting-preferences.ug.html

Hi Veronika,

to help you, we need more information. Which version of Adobe Illustrator are you using? Which OS are you running the software on? Have you tried resetting the preferences?