Sorry about the trouble you are facing while saving the files with Illustrator. If I get it correctly, whenever you are trying to save files with Arabic text, it saves a temp file instead, files with English text just save normally.
In that case, I would request if you could share a few more details like:
We’re here to help, just need more info.
I have windows 10 corporate plan with full adobe suit facility. We are in Medical Pharma line. We make Artworks in multiple languages as per project requirement. Antivirus cisco we are using, all system updated do regularly by our IT people. These was saving on desktop with local folder. This is facing from last 7 days, sometime says file name is too long. But when windows 10 have some limitations upto 266 characters, but Illustrator cann't handle big file name.
I think you figured it out already. If the file name is the issue, try simplifying it, drop the plus (+) symbol perhaps.