Edited August 18, 2021
at 12:17 PM
The MS Rewards has had the promo to install the Bing [microsoft.com]
app and get 500 MS Rewards Points for a couple years now.
Once claimed you can't claim it again. That isn't the case today. Many people are having success claiming the 500 points again.
Simply uninstall the Bing app if already installed and reinstall it. Then login to claim your 500 points. This is working with Android [google.com]
and iOS [apple.com]
If the app is already installed you have the option to Force Stop, Clear Data, and Clear Cache. Then login again to claim the 500 points.
The success rate is very high but considering this is not an advertised promotion to claim the 500 points again, I am labeling this as YMMV.
Sign up for free MS Rewards [microsoft.com]