Hi, I'm pretty sure that you have Nightly/143, not Beta/142.

I wrote this post from Nightly, but otherwise I tried on Beta.

Hi Vexi,

Let me escalate this internally to see what might've gone wrong.

Hi Vexi,

I was told that you need to check about:studies and look for the Semantic History Search Test Days Event experiment. Also, you should be on Firefox Beta 142 with the en-US variant.

As long as meet the above's criterias, you should be all set.

Thanks for the answer! I found it but it says Complete and I can't select it.

Hello! I saw that the Test day event had started. In Firefox Beta, I entered messaging-system-action.testday in about:config, put it on a string and set the value to testday as it said in the instructions. When I restarted Firefox, the welcome window did not appear and there was also no letter S next to the search as it should be. Please help! Thanks for the answers! Vexi

Same for me on Linux...

Thanks for the answer! I found it but it says Complete and I can't select it.

Hey folks,

Anyone of you provide a screenshot of the about:studies?

Hello! Here I am attaching a screenshot from the about:studies page.

Thanks for the screenshot! The team asked if you can try to re-enroll from a new profile. Also, just to set the expectation right, the welcome message will appear when you open a New Tab. We've also updated the campaign landing page to reflect that.

Hello! It still doesn't work! Now there's nothing under Completed, but there's still nothing under Active!

Hello! I managed to solve the problem! Thanks everyone for your help and patience!

Have a nice day!

Vexi

Ouh, I'm glad you're able to fix the problem. Do you mind sharing what might've fixed it?

Hello! To solve the problem, I first logged out and then deleted all profiles including the default release. I created a new profile that I did not log in to. I checked if Semantic History Search Test Days Events was available in about:studies. I also activated it in about:config. When I reopened Firefox, a welcome window appeared. I deleted all profiles again and did the same, except that I logged in to my account while installing the new profile. I activated testday again and it worked!