MS CRM 2011 on premise.
No problems if accessed via internal address: crm:5555
Go to crm.ourcompany.co.uk:5555 in IE and load account page and the ribbon is totally grey. (Not disabled - every pixel is the colour grey.)
In Chrome and Firefox the ribbon is loaded fine.
Browser console in IE, Chrome and FF all say access errors.
I can see they are trying to access crm:5555.
IE says:
SCRIPT5: Access is denied.
PageLoader.js, line 1 character 1226
The second line above is presented as a link. Clicking it shows me this: http://pastebin.com/bBadk9HS
The full path is http://crm.ourcompany.co.uk:5555/_static/_common/scripts/PageLoader.js?ver=-1056260279
P.S. IE is "Browser Mode: IE10 Document Mode: IE9 standards".
After Long investigation I have found out the reason for same issue like this. We had previous rollup activity feed solution. After importing the new version of Activity feeds this hectic issue was sorted out.
Activity feed new solution is available with rollup up package.it can be found by exacting the rollup package. Previously this was available in Microsoft Dynamic market place.
It turns out that the problem is an address lookup plugin on the Account form.
This is trying to access http://crm:1999, which is a 404, and http://crm:5555, which isn't allowed.
Solutions are to fix the server on http://crm:1999 and set up proper managed internal and external URLs so it'll know whether http://crm:5555 or http://crm.ourcompany.co.uk:5555 or remove the plugin.
来源：https://stackoverflow.com/questions/17545918/grey-ribbon-on-account-form-in-ie-script5-access-is-denied-in-pageloader-js