The 1.16.20.03 update left all our family's iPads logged out of their Live accounts.  Two iPads logged in without challenge; one is crashing reproducibly at the login attempt.

Trying to log back in on this iPad: 

• click Sign In
• click either button (upload to microsoft account or leave on device), it doesn't seem to matter
• -> crash (SIGSEGV dereferencing a garbage address: 0xb000000011dec979, 0x0000000001000009, 0xc000000000000008 on the three crash logs I sampled)

The crash is always here in the "Xal" library:

 Thread 65 Crashed:
0 Xal 0x0000000104805cb4 0x104778000 + 580788
1 Xal 0x0000000104805cb0 0x104778000 + 580784
2 HttpClient 0x00000001049cb8b8 0x104938000 + 604344
3 HttpClient 0x00000001049cbf44 0x104938000 + 606020
4 HttpClient 0x000000010493e7ec 0x104938000 + 26604
5 HttpClient 0x000000010493e6d4 0x104938000 + 26324
6 libsystem_pthread.dylib 0x00000001909edd98 0x1909e3000 + 44440
7 libsystem_pthread.dylib 0x00000001909f174c 0x1909e3000 + 59212