Amsterdam to Paris by Train. No tickets available for April 17 or the morning of April 18.

Assuming the Thalys is not running those days.
1. Fly.
2. Go to www.bahn.com and put in Amsterdam to Paris, then click on the "Further Options" button. Then click on the "Connections: More means of transport" button, deselect ICE. Then you will see all the connections not using the Thalys. Bad news is that it is 7 to 9 hours. with 4 connections.
3. Take the bus.

Looks like 1. change Paris reservations or 2. fly. I think I'll opt for changing reservations, assuming I can. Thanks for the info.

Currently, the NS International Page - https://www.nsinternational.com/en - is routing passengers from Amsterdam Centraal to Paris Nord via Brussels on IC Brussels/Thalys trains for these dates. They are not showing any Thalys from Amsterdam, but you can connect to Thalys in Brussels. This routing takes 4.37 hours or 5.07 hours, depending on which time of day you select. Granted the Thalys direct is often under 3.5 hours, but this is an option...

It sounds like engineering work on the line, probably using the Easter weekend as there will be fewer commuters.

Ah, Easter, that makes sense. I guess. I just changed my travel dates. I will not be defeated by Thalys!

I’m happy to hear you worked it out. When will you be arriving?

Woohoo!! I am glad you figured it out!

Happy you worked it out..just fyi..I have take the Paris to Amsterdam direct 2x during Easter holiday..and I have never seen a more jam packed train..the first time i had too many bags for my seat..lesson learned for the next trip..just an fyi so that u aren't scrambling for much sought after luggage storage..

Thanks for the heads up Linda. I travel with a small rolly bag. I have a solo seat, so hopefully, I won't be fighting for luggage space. But I'll be ready!