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What Is "403 Forbidden"?

In terms of Blogger problems, which occur seemingly randomly and have no obvious user solution, I can't think of too many that bring more dread into peoples hearts than

403 Forbidden
That message is actually where I started this blog - many, many years ago. It's come up, in discussion, several times.

The message "403 Forbidden" is literally a response by a computer somewhere, saying that you are not permitted to access this computer. For Blogger / Google customers, it generally has a slightly different origin.

The "403 Forbidden" message, for Blogger blog owners, is frequently the result of a networking technique, used by Google and owners of other large networks, for blocking malicious network traffic. It generally means that some group of computers, in your ISPs address space, are controlled by somebody besides their legal owners, and are generating excessive network traffic which the Google networks are detecting as malicious.

The "malicious activity" may involve brute force password guessing, or maybe botnet setup activity. Some other Blogger account owner(s), somewhere else in the world, may be seeing a "Disabled account" notice, referring to "suspicious activity on your account".

In order to continue service to the world in general, Google will block the address space used by this group of problem computers. If the Internet address which you are using is similar to the addresses used by the problem group of computers, Google will block your address, along with their addresses.

Generally, there's nothing that you can do but wait this out. Either 1 of 3 things will happen, eventually.
  1. The computers involved will go offline, or otherwise cease their attacks, and Google will remove the network block.
  2. Google will reduce the range of addresses blocked, and will remove the block on your specific address space.
  3. More people will report the symptom - or validate their identity - and Google will look more closely at the actual cause of the problem.

If you know how to, and if your Internet service allows you to do this, you may be able to change your Internet address. This solution won't be universally effective, though.
  • Your Internet service ("Fixed IP") may not allow this.
  • You may not know how to do this.
  • Your Internet service may detect this change, by you, as suspicious activity.
  • Your new address may also be blocked by Google.
  • Your new address may be blocked by another Internet service, and you'll have to start over with them.
So right now, I'll not go into the details of changing your address - though you may try doing this, if you wish. It's your computer, after all.

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