Hi Katsue Maudrux

Indeed, the name is below 259 letters, so might be something on the name of the folder or the actual folder containing other files that might cause this. 

You have advised above that you create new folders for each project, so please just double-check if in that folder are there any files added there by mistake ?

If this is not the cause, maybe there are any special characters used in the name of the folder that causes this. The simplest way to test this would be to create a new empty folder on desktop or on one of your drives and name it simply Test and then please retry again to create or open the project. If Trados studio would not show the error again then might be an - or some special character in the folder name that could cause the issue. 

If even with using a test folder you still get the error them might be another issue and then worth trying to repair Trados Studio installation - https://gateway.rws.com/csm?id=kb_article_view&sysparm_article=KB0039395 

I hope this would help 

Best regards, 

Loredana

Please let me add, that if only I delete one letter, the error sign goes out.

This means that a new additional folder should be created, like below image: one project file for me + trados package file

ex. I can't download the package in the "05 Generic" folder (name too long error), so I need to create "05 Generi" folder separately for new trados package download.

If I change the placement of these files (put 05 Generi under 05 Generic) I can't save my translation.

Hello Loredana thank you for your advice !

I have tried to download directly on the Desktop, still the same (TT) so I think I need to repair... right ?

Hi Katsue Maudrux - have you seem my request to you here

Hi Lydia, yes I do ! but I had too much jobs to handle and I could not reply earlier...

I am checking if I can share my trados package with you (NDA), could you wait a little longer ? Or is it possible to eschange between us by email ??

Thank you again for your help, 

Hi Lydia, thank you for your help on this matter. My translation agency proposed me un IT help instead of letting me send you the package (NDA). And now this problem is closed. 

What I did ; Windows update (updated to Windows 10 21H2 & some other updates done),  checked Trados updates (no update), then I did "Workaround 2: Reset Trados Studio basic settings" of here https://gateway.rws.com/csm?id=kb_article_view&sysparm_article=KB0039395

I hope it will help someone somewhere ...

Thank you and BR

Fantastic Katsue Maudrux - Thank you for letting us know.