You have to override the web module with your own module. You can add a line like

'data': [ 'views/website_templates.xml' ]

in your __openerp__.py.

Put your favicon at static/src/img/favicon.ico and add a template to views/website_templates:

<template id="MYSITE_layout" inherit_id="website.layout" name="MYSITE layout" priority="17">
    <xpath expr="//head//link" position="after">
        <link rel="shortcut icon" href="/MYSITE_web/static/src/img/favicon.ico" type="image/x-icon"/>
    </xpath>
</template>

You can try my module web_debranding

It allows to configure favicon dynamically at Settings\System Parameters:

    <template id="web_debranding.web_layout" inherit_id="web.layout">
       <xpath expr="//title" position="replace"></xpath>
       <xpath expr="//link[@rel='shortcut icon']" position="replace">
           <t t-set="favicon" t-value="request.env['ir.config_parameter'].get_param('web_debranding.favicon_url', '').strip()"/>
           <t t-if="favicon">
               <link rel="shortcut icon" t-att-href="favicon" type="image/x-icon"/>
           </t>
       </xpath>
    </template>

In V8 you can change favicon by modifying templates. See e.g. "website.layout" view

You may do it through the interface with the help of this module: https://apps.odoo.com/apps/modules/8.0/colors_customization/

Hi, 

Please check this

https://youtu.be/mX8WSUnBOIU

Hope it helps,

Thanks

It's not a standard feature of Odoo 17, but you can acquire the app from the Odoo App Store.

Visit this link for more information: https://apps.odoo.com/apps/modules/17.0/mh_multi_company_favicon 

In Odoo 17 we cannot anymore change the favicon via company, they have removed the field

you can also replace the favicon.ico by just tracing it and replacing the ico file with your ico file.

i tried this step and it worked.

Try changing the source code:

/addons/web/controllers/main.py#L548

Or just drop yours here : addons/web/static/src/img

Regards