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Why can't QQ save the copy when editing the copy of QQ group assistant?
When saving the copy of QQ assistant, the account number displayed is abnormal, and the copy cannot be saved.

In fact, this problem is because

Just modify the file settings, as shown below:

QQ settings are saved in a user's username, a user's username and a document \ Tencent file \

In the QQ\Registry.db file, if there is a problem with this file, QQ settings will not be saved. The solution is also simple. Delete this file, exit QQ, restart QQ, and then reset. QQ will automatically generate a new file, and you can save the settings normally.

You can delete QQ and download QQ again.