Store password in TortoiseHg

Both existing answers suggest storing your username and password unencrypted in plain-text, which is a bit of a no-no.

You should use the Keyring extension instead, as it has been specifically designed for securely saving authentication passwords. It already comes bundled with TortoiseHg, so all you have to do is activate it by writing the following in your mercurial.ini file:

[extensions]
mercurial_keyring=

You will also have to associate your username with the push url by editing your repository-specific .hg\hgrc file like in the example below:

[paths]
default = https://<your_username>@bitbucket.org/tortoisehg/thg

For more details on associating your username with the url, see the Repository Configuration (SMTP) section of the Keyring extension page.

Three steps, watch screenshot. Note: This stores your password in plaintext.

Security warning

Although this answer is accepted as of 2017-09-15, it is not a recommended solution. You should never store your passwords in plain text. Use the mercurial_keyring extension instead. See another answer here.

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You can change your push URL to https://username:[email protected]/repo.

This is explained in Google Code's and Mercurial's FAQs.

EDIT: Mercurial FAQ explains another way to do it:

With Mercurial 1.3 you can also add an auth section to your hgrc file:

[auth]
example.prefix = https://hg.example.net/
example.username = foo
example.password = bar