Error: smtplib Username and Password Not Accepted
What's Causing This Error?
This error occurs when the SMTP server cannot authenticate successfully using the credentials provided.
Additionally, you may encounter this error when connecting with the Google SMTP server using an account that does not support "Less Secure Sign In Technology."
This error also occurs due to firewall and virus guard issues in rare cases.
Solution - Here's How To Resolve It
Ensure that the credentials provided are correct. If you are connecting to a Google SMTP server, ensure that you've enabled "Less Secure Sign In Technology" and have disabled Two-Factor Authentication.
Other Common SMTPLIB Errors (and Solutions)
- Name "smtplib" is not defined
- smtplib SMTP Sender Refused
- smtplib SMTP Exception: SMTP auth extension not supported by the server
- Module smtplib Has No Attribute SMTP
- smtplib SMTP Server Disconnected
- smtplib.smtprecipientsrefused Relay Access Denied
- smtplib smtpserverdisconnected Connection Unexpectedly Closed
- pip install smtplib Not Working
- Python smtplib cc Not Working
View all errors
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