Windows 10: I tried to unlock my account, but when i put a valid number it can't send the code to the...

Please help me because the computer keeps forcing me to sign in.

:)

 

AT&T Activates Call Validation Displays

Source: AT&T Activates Call Validation Displays

 

Error: "Error Invalid Number. Please re-send using a valid 10 digit mobile number or valid short code" on Windows 10 mobile

If I get a phone call from an unknown number (i.e., not in my contact list) and I try to respond via text (e.g., "Sorry, busy right now."), I get a message that says, "Error Invalid Number. Please re-send using a valid 10 digit mobile number or valid short
code." This was a great feature that worked with Windows 6 Mobile, and I can't believe it is still broken in Windows 10 Mobile. Presumably, it can't recognize 11 digit numbers (1-Area Code-XXX-XXXX), but it does work with calls from my contact list (Area
Code-XXX-XXXX). I assumed that the Anniversary update would fix this problem, but it continues to cause frustration.

Original title: Text Reply for Incoming Calls

 

Error: "Error Invalid Number. Please re-send using a valid 10 digit mobile number or valid short code" on Windows 10 mobile

Thanks for your quick response. Here are my answers to your questions:

• What is the make and model of your phone? Lumia/Microsoft 950
• What is the complete error message/ error code of this issue? The text I sent previously is verbatim from the phone: "Error Invalid Number. Please re-send using a valid 10 digit mobile number or valid short code"
• Which is the latest version of Windows 10 Insider program installed on your phone?
  This is the latest Anniversary update that was recently pushed out by AT&T, OS Build 10.0.14393.67 but it has always been a problem with Windows 10 (I just didn't report a problem assuming it would be fixed with the next major update).