Why doesn't QQ add friends, and the other party can't see the message I sent?

QQ does not add messages that friends can't see, because the other party has set up temporary session rejection. The method comprises the following steps:

Computer login QQ to open the QQ main panel.

Click the "Settings" menu in the lower left corner of the QQ main panel.

Enter the setting interface and click "Permission Settings".

Then click "temporary conversation" in the navigation bar on the left, and check "Do not receive any temporary conversation messages".

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