
Outlook Not Sending Emails: Practical Fixes for Common Causes
You compose an email, hit Send, and it sits in the Outbox. Or you get a vague error like “Tas...

You compose an email, hit Send, and it sits in the Outbox. Or you get a vague error like “Tas...

You click the Microsoft Store icon, but nothing happens—or it opens briefly and crashes. Maybe yo...

You insert your smart card, enter your PIN, and Windows Security reports “Authentication failed.”...

You close a dozen tabs in Chrome, but the memory usage stays high—sometimes even after restarting...

You see a "Windows isn't activated" watermark, but you don't have a product key. Maybe you upgrad...

If you get an authentication failed error when sending email in Outlook, the problem is usually a...