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First go to the myguichet.lu website and click on "Log in". Then log in with your device and your login.

Click on "Submit a completed document" at the top.



Then add your the PDF of form 100 and click "Next".



Then click on "Add a supporting document" to add the PDF of your attachments/annexes and then click on "Sign" and follow the instructions on the site. Finally click on "Send".

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