Issue:  When a user attempts to login to the MDL when they are already logged in on another computer it attempts to log them in and then fails with a generic failed to login please try again message.  I was able to guess the issue by digging through the logs to find this error: "title_usage_by_device_exceeded"

Steps to Reproduce:

1. Login on the first computer
2. Login on a second computer
3. Note generic error message is returned

Expected Result:

I would expect some indicator that the user is already logged in somewhere and/or present an option to go online on the second and kick the first offline.

Workaround:

Log out on the first computer and try again on the second

Sample log output:

[Info: 2020-06-06 05:04:32.1045451: NetQueue.cpp(590)] NetQueue: Starting net action sisu.xboxlive.com
[Info: 2020-06-06 05:04:32.4329376: NetQueue.cpp(469)] NetQueue: Primary ip: 40.91.122.242, Host: sisu.xboxlive.com
[Info: 2020-06-06 05:04:32.4331005: NetQueue.cpp(536)] NetQueue: Action finished: sisu.xboxlive.com
[Info: 2020-06-06 05:04:32.4334542: XalContext.cpp(105)] WWW-Authenticate header from SISU Authorize is XSTS error="title_usage_by_device_exceeded"

[Error: 2020-06-06 05:04:32.4335910: XalContext.cpp(111)] SISU Authorize returned 401
[Info: 2020-06-06 05:04:32.4441044: NetQueue.cpp(575)] NetQueue: worker thread started.
[Info: 2020-06-06 05:04:32.4442379: NetQueue.cpp(557)] NetQueue: Action finalized: sisu.xboxlive.com
[Info: 2020-06-06 05:04:32.4578283: NetQueue.cpp(590)] NetQueue: Starting net action https://sentry.io/api/2703928/store/
[Info: 2020-06-06 05:04:33.0403204: NetQueue.cpp(469)] NetQueue: Primary ip: 35.188.42.15, Host: sentry.io
[Info: 2020-06-06 05:04:33.0404870: NetQueue.cpp(536)] NetQueue: Action finished: https://sentry.io/api/2703928/store/
[Info: 2020-06-06 05:04:33.0405723: SentryAPI.cpp(119)] Rate limiting activated (429). Instructed to back off for 208 seconds.
[Info: 2020-06-06 05:04:33.0406385: NetQueue.cpp(552)] NetQueue: Action failed in finalization: https://sentry.io/api/2703928/store/
[Info: 2020-06-06 05:04:35.9817005: NetQueue.cpp(590)] NetQueue: Starting net action sisu.xboxlive.com
[Info: 2020-06-06 05:04:36.3257689: NetQueue.cpp(469)] NetQueue: Primary ip: 40.91.122.242, Host: sisu.xboxlive.com
[Info: 2020-06-06 05:04:36.3259336: NetQueue.cpp(536)] NetQueue: Action finished: sisu.xboxlive.com
[Info: 2020-06-06 05:04:36.3262496: XalContext.cpp(105)] WWW-Authenticate header from SISU Authorize is XSTS error="title_usage_by_device_exceeded"

[Error: 2020-06-06 05:04:36.3263975: XalContext.cpp(111)] SISU Authorize returned 401
[Info: 2020-06-06 05:04:36.3265007: NetQueue.cpp(557)] NetQueue: Action finalized: sisu.xboxlive.com
[Info: 2020-06-06 05:04:42.7292789: NetQueue.cpp(590)] NetQueue: Starting net action sisu.xboxlive.com
[Info: 2020-06-06 05:04:43.0121721: NetQueue.cpp(469)] NetQueue: Primary ip: 40.91.122.242, Host: sisu.xboxlive.com
[Info: 2020-06-06 05:04:43.0123292: NetQueue.cpp(536)] NetQueue: Action finished: sisu.xboxlive.com
[Info: 2020-06-06 05:04:43.0126443: XalContext.cpp(105)] WWW-Authenticate header from SISU Authorize is XSTS error="title_usage_by_device_exceeded"

[Error: 2020-06-06 05:04:43.0127734: XalContext.cpp(111)] SISU Authorize returned 401
[Info: 2020-06-06 05:04:43.0128733: NetQueue.cpp(557)] NetQueue: Action finalized: sisu.xboxlive.com
[Error: 2020-06-06 05:04:43.0356146: Xal.lib(0)] XAL: Http request 09F84B48 failed with system error code 2149122448
[Warning: 2020-06-06 05:04:43.0364774: Xal.lib(0)] XAL: [07C8CF48] Operation AuthorizeWithSisu failed with result 0x89235106: Network error
[Warning: 2020-06-06 05:04:43.0371681: Xal.lib(0)] XAL: [0C168E30] Operation GetXtoken failed with result 0x89235106: Network error
[Info: 2020-06-06 05:04:43.0381091: Xal.lib(0)] XAL: [0C1852B8] Operation SignOut is starting with CV 'vn3CztWnUcfNXWGf.8.3'
[Info: 2020-06-06 05:04:43.0385988: Xal.lib(0)] XAL: [0362A7F0] Client operation WebViewPlatformOperation starting
[Info: 2020-06-06 05:04:43.0391055: Xal.lib(0)] XAL: [0362A7F0] Client operation WebViewPlatformOperation calling platform handler
[Info: 2020-06-06 05:04:43.0402989: Xal.lib(0)] XAL: [0362A7F0] Client operation WebViewPlatformOperation platform handler reported completion status 'XalPlatformOperationResult_Success' (0)
[Info: 2020-06-06 05:04:43.0408648: Xal.lib(0)] XAL: [0362A7F0] Client operation WebViewPlatformOperation succeeded
[Info: 2020-06-06 05:04:43.1447509: Xal.lib(0)] XAL: [0362A7F0] Client operation WebViewPlatformOperation continuing
[Info: 2020-06-06 05:04:43.1457538: Xal.lib(0)] XAL: >>> Xal::Auth::MsaTokenCacheWin32::ClearTokensForUserAsync (00103AAC100661B4)
[Info: 2020-06-06 05:04:43.1470745: Xal.lib(0)] XAL: <<< Xal::Auth::MsaTokenCacheWin32::ClearTokensForUserAsync (00103AAC100661B4)
[Info: 2020-06-06 05:04:43.1473330: Xal.lib(0)] XAL: >>> Xal::Platform::Win32::AccountMigratorFociWin32::NotifySignOut (00103AAC101E7C04)
[Info: 2020-06-06 05:04:43.1543810: Xal.lib(0)] XAL: <<< Xal::Platform::Win32::AccountMigratorFociWin32::NotifySignOut (00103AAC101E7C04)
[Info: 2020-06-06 05:04:43.1546652: Xal.lib(0)] XAL: [0C1852B8] Operation SignOut succeeded.
[Warning: 2020-06-06 05:04:43.1550451: Xal.lib(0)] XAL: [0BCADBD0] Operation SignIn failed with result 0x89235106: Network error
[Warning: 2020-06-06 05:04:43.1554169: Xal.lib(0)] XAL: [07CBCC00] Operation AddUser failed with result 0x89235106: Network error
[Info: 2020-06-06 05:04:43.1560980: Xal.lib(0)] XAL: [035CEDA8] Operation UploadTelemetryEvents is starting with CV 'vn3CztWnUcfNXWGf.15.0'
[Info: 2020-06-06 05:04:43.1563635: Xal.lib(0)] XAL: XalAddUserWithUiAsync calling back to client with result 'Network error' (0x89235106)
[Info: 2020-06-06 05:04:43.1567836: NetQueue.cpp(590)] NetQueue: Starting net action vortex.data.microsoft.com
[Error: 2020-06-06 05:04:43.1567939: UserIdentity.cpp(87)] XAL sign-in failed. XAL status: 8
[Info: 2020-06-06 05:04:43.1570868: LauncherController.cpp(1157)] Failed to sign in using XAL
[Info: 2020-06-06 05:04:43.3433761: NetQueue.cpp(469)] NetQueue: Primary ip: 64.4.54.254, Host: vortex.data.microsoft.com
[Info: 2020-06-06 05:04:43.3435240: NetQueue.cpp(536)] NetQueue: Action finished: vortex.data.microsoft.com
[Info: 2020-06-06 05:04:43.3437778: NetQueue.cpp(557)] NetQueue: Action finalized: vortex.data.microsoft.com
[Info: 2020-06-06 05:04:43.3617753: Xal.lib(0)] XAL: [035CEDA8] Operation UploadTelemetryEvents succeeded.
[Info: 2020-06-06 05:05:41.2030897: NetQueue.cpp(590)] NetQueue: Starting net action https://piston-meta.mojang.com/v1/products/dungeons/f4c685912beb55eb2d5c9e0713fe1195164bba27/windows-x64.json
[Info: 2020-06-06 05:05:41.2256883: NetQueue.cpp(469)] NetQueue: Primary ip: 152.195.19.97, Host: piston-meta.mojang.com
[Info: 2020-06-06 05:05:41.2258447: NetQueue.cpp(536)] NetQueue: Action finished: https://piston-meta.mojang.com/v1/products/dungeons/f4c685912beb55eb2d5c9e0713fe1195164bba27/windows-x64.json
[Info: 2020-06-06 05:05:41.2259137: NetQueue.cpp(557)] NetQueue: Action finalized: https://piston-meta.mojang.com/v1/products/dungeons/f4c685912beb55eb2d5c9e0713fe1195164bba27/windows-x64.json
[Info: 2020-06-06 05:05:41.2268345: NetQueue.cpp(590)] NetQueue: Starting net action https://piston-meta.mojang.com/v1/packages/e99e73be4d9f8113503d41614ecb99e7ca22eeb2/manifest.json
[Info: 2020-06-06 05:05:41.2516759: NetQueue.cpp(469)] NetQueue: Primary ip: 152.195.19.97, Host: piston-meta.mojang.com
[Info: 2020-06-06 05:05:41.2518319: NetQueue.cpp(536)] NetQueue: Action finished: https://piston-meta.mojang.com/v1/packages/e99e73be4d9f8113503d41614ecb99e7ca22eeb2/manifest.json
[Info: 2020-06-06 05:05:41.2519005: NetQueue.cpp(557)] NetQueue: Action finalized: https://piston-meta.mojang.com/v1/packages/e99e73be4d9f8113503d41614ecb99e7ca22eeb2/manifest.json
[Info: 2020-06-06 05:06:43.2730729: ControllerInterface.cpp(120)] Running async method xalSignIn
[Info: 2020-06-06 05:06:43.2736249: Xal.lib(0)] XAL: [0C176338] Operation TryAddFirstUserSilently is starting with CV 'vn3CztWnUcfNXWGf.16.0'
[Info: 2020-06-06 05:06:43.2738959: Xal.lib(0)] XAL: [0C17C8F0] Operation GetDefaultUser is starting with CV 'vn3CztWnUcfNXWGf.16.0'
[Info: 2020-06-06 05:06:43.2741454: Xal.lib(0)] XAL: [03600480] Operation InitializeTokenStack is starting with CV 'vn3CztWnUcfNXWGf.16.0'
[Info: 2020-06-06 05:06:43.2743891: Xal.lib(0)] XAL: [0C19AFF0] Operation LoadClockSkew is starting with CV 'vn3CztWnUcfNXWGf.16.0'
[Info: 2020-06-06 05:06:43.2744383: Xal.lib(0)] XAL: [0364C8A8] Client operation StorageReadPlatformOperation starting
[Info: 2020-06-06 05:06:43.3210225: Xal.lib(0)] XAL: [0364C8A8] Client operation StorageReadPlatformOperation calling platform handler
[Info: 2020-06-06 05:06:43.3215270: Xal.lib(0)] XAL: [0364C8A8] Client operation StorageReadPlatformOperation platform handler reported completion status 'XalPlatformOperationResult_Failure' (1)
[Info: 2020-06-06 05:06:43.3216776: Xal.lib(0)] XAL: [0364C8A8] Client operation StorageReadPlatformOperation failed with result 0x89235107: Client operation failed
[Info: 2020-06-06 05:06:43.4244161: Xal.lib(0)] XAL: [0364C8A8] Client operation StorageReadPlatformOperation continuing
[Warning: 2020-06-06 05:06:43.4249888: Xal.lib(0)] XAL: Clock skew failed to be read: 0x89235107 "Client operation failed"