Ran into an issue with IE8 showing the following prompt with every page view under SSL.
Security Warning
Do you want to view only the webpage content that was delivered securely?
This webpage contains content that will not be delivered using a secure HTTPS
connection, which could compromise the security of the entire webpage.
Turns out the addition of the Microsoft AJAX CDN service is the cause in this particular case. Changing the script link to use SSL resolves the issue.
Recently I started getting the following error from UpdatePanels in a ASP.NET site.
Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled. Details: Error parsing near '[initialvalue']|""|<div id="__asptrace"'.
Happily the error message pretty much points me straight at the issue: "server trace is enabled" and "__asptrace".
Turning the ASP.NET server trace off resolves the issue.
<trace enabled="true" pageOutput="false" requestLimit="40" traceMode="SortByTime" localOnly="true"/>
After doing a deployment from the build server in the NZ timezone to the production server in the US PST timezone I started seeing the following exception:
---- Exception information: Exception type: ArgumentOutOfRangeException Exception message: Specified argument was out of the range of valid values. Parameter name: utcDate Request information: Request URL: https://www.mydomain.com:443/Site/ScriptResource.axd?blahdeblah ----
Turns out there were problems locating AJAX assemblies that, from the production servers perspective, were dated in the future.
The solution is to either wait for the timezone difference to sort itself out or to update the last modified date on the DLLS.
See the following link for an example of the latter.