New Outlook does not show Old emails

Set email sync period to all time. Worked for me

Yes, this same behavior happens to my account on katamail.com
What is strange is that on my gmail account the limitation on the time span mails are shown in the inbox (1 month approx) does not happen.

On my gmail account, also served by new outlook client, there are mails dated back to the beginning of 2024 or even before

Several posts back in this thread, I linked to a thread where a Microsoft-ee reported that this behavior was "By Design". Why they think this design makes sense was not explained.

If your email provider offers a webmail interface, that's one way to see that your older messages are still there (mine are, anyway). You can also use a better client like, say, Thunderbird. Indeed, in that other thread, the Microsoft person suggests using a better, non-Microsoft, email client app if you don't like this behavior of New Outlook. Wow.

For a long while now, in the new Outlook, I cannot see emails that are one month old. In the old version, there is no problem. I also double checked that I haven't run out of room with my email provider. Also double checked that ALL emails are selected. Other people seems to be experiencing the same issue. Why has there not been a solution to this problem yet? It seems that it began October 2023. It is now August 2024. You can do better Microsoft. Using MS Office Professional Plus 2016.

Not sure where we are with this, but my issue was that scrolling down my inbox would not load any messages further back than a week. What worked for me was to click the 3 lines button at the ribbon of the inbox (it is the sort/filter button) > then expand the Sort option > then sort by oldest on top. This will resort your inbox with the oldest email in there on top. All you have to do is change the sort back to newest on top, and voila. Worked for me, hopefully this helps some others until microsoft fixes their programs.