Steam Guard "Missing or invalid session key" SOLUTION

[Pelusa]

SOLUTION: Before asking for an SMS with a code to activate Steam Guard, WHAT YOU NEED TO DO FIRST is to verify your phone number with an SMS.

[3IMAD]

i actually did . still no fix

[krzø.]

set it to E-Mail its easier

[kAT1]

still not fix

[メplain]

Update Google Chrome and set it as the default browser. Or update Android System WebView

[Brekn]

update chrome