DO I DELETE ACHIEVEMENTS AND ALL PROGRESSES OF XBOX GAMES ON WINDOWS 8.1 ?

Saving Microsoft Solitaire Collection progress between Windows 10 and earlier versions

With the Windows 10 version of Microsoft Solitaire Collection, your progress is automatically saved to the cloud. This means you can sign in on any Windows 10 device and pick up right where you left off. The cloud even saves your progress on challenges and
achievements.

If you're also using a Windows 8 or 8.1 device, your progress is automatically saved to the cloud as well, and you can keep earning achievements and completing challenges between other Windows 8, 8.1, and Windows 10 devices.

Note Any achievements and challenges that you complete on your Windows 10 device will not be available on your Windows 8 or 8.1 devices. The Windows 10 version of Microsoft Solitaire Collection contains new features and challenges that aren't
available in previous versions of the game.

For example, if you play Microsoft Solitaire Collection on your Windows 8.1 device at work and complete all the daily challenges, you’ll find that these challenges are incomplete when you open Microsoft Solitaire Collection on your Windows 10 device at home.
The next day, when you return to your Windows 8.1 device, the challenges from the previous day will show as completed.

Yesterday my achievement progress was gone on watchdogs, and now today some of the progress is back but not close to what is should be. I am missing quite a few achievements now for watchdogs which i have been working very hard to get and its frustrating
seeing the progress wheel in-game saying i should have the achievement but xbox wont give them to me.

I noticed this this morning (7/31/14) all of my TitanFall progress on currently locked achievements was and did stay at 0%. I'm sure my other games were affected as well(Guacamelee, Spartan Assault, and Wolfenstein) but TitanFall is the only one I actively
keep track. I even played a game of Hardpoint to see if they were just reset but after I won the game the progress on the Hardpoint Achievement was still 0%. Kinda don't want to play any Xbox One games until this is remedied and my progress reinstated.

Same.

Starting last week (October 23 approx) I noticed the leaderboards in Windows Phone games no longer function, across all WP 7, 8, 8.1, and 10 games.

Worse than that, achievements do not sync on WP 7, 8, and 8.1 games.

(WP 10 is currently ok for me).

FYI: I still own 9 working Windows Phones for the purpose of earning Xbox achievements. It is a major diss to lose this functionality without prior notice.

Since March 2020, achievements that are unlocked on windows phone 7, 8 or 8.1 will not sync to Xbox profiles. I've seen numerous people reporting that they have the same issue. That being when you unlock an achievement on windows phone 7, 8 or 8.1 it will
unlock however won't sync to your profile. This issue also happened in October of 2019, however was resolved and achievements started syncing again throughout November 2019 - February 2020. It is now broken again and needs to be fixed.

For me I'm using a Lumia 640 running Windows 8.1 and the achievements I've earned in March and May 2020 haven't synced. Everyone has the exact same problem and it is occurring on all windows phones using 7, 8 and 8.1 os.

This a service issue, I hope it gets fixed.

I have two Lumias, one with Windows Phone 8.1 with the Lumia 630 device and the other with Windows 10 Mobile with the Lumia 532 device, I am experiencing problems in obtaining and recording achievements, especially with Windows Phone 8.1. I hope this problem
is resolved, so that we can finish all pending games.