UPDATE: There's a permanent fix at the end of the post
After our client computers ran the update Cumulative Security Update for ActiveX Killbits (KB956391) it broke the reporting servies report viewer.
Security Advisory for 956391
If you have the update and you click the print button on the report viewer control you will recieve a message that says "Unable to load client print control"
I've looked around to see if there's anything to update, such as the servers version of Reporting services or the ReportViewer control.
On a test server I've installed the newest ReportViewer control but it didn't seem to fix the issue.
I've found that removing the hotfix fixes the issue.
From the way it sounds the killbit was set for the control because it had a vulnerability where GDI+ could allow remote code execution.
Microsoft Security Bulletin MS08-052
Edit:There's a ReportViewer SP1 but that doesn't seem to solve the issue for me, where others have stated it's solved their issue.
I've found a temporary solution, its not a very good solution cause you'll still open up the vulnerability but until microsoft comes out with a new reportviewer control there's not much of a choice.
You can turn off the killbits for the control thru the registry.
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{FA91DF8D-53AB-455D-AB20-F2F023E498D3}]
"Compatibility Flags"=-
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{FA91DF8D-53AB-455D-AB20-F2F023E498D3}]
"Compatibility Flags"=-
Then when you want to turn them back on
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{FA91DF8D-53AB-455D-AB20-F2F023E498D3}]
"Compatibility Flags"=dword:00000400
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\ActiveX Compatibility\{FA91DF8D-53AB-455D-AB20-F2F023E498D3}]
"Compatibility Flags"=dword:00000400
I will keep this updated if I find a better solution.
UPDATE FOR PERMANENT FIX :
There's SQL server updates that fix the issue.
Install the appropriate update for your SQL server version.
for SQL version 9.00.3042-9.00.3072 get the GDR version
for SQL version 9.00.3150-9.00.3281 get the QFE Version
UPDATE 10/20:
Over the weekend I applied the patches to our SQL server and we're still getting the issue in our application. However, I'm able to print fine from the Reporting Services Reporting Manager, which didn't work before the patch.
Just briefly what we're running for servers, We've got a SQL Server 2005 SP2 with the GDR update running on Windows 2003, and a Web Server on Windows 2003.
I'm guessing that I need to update the control in our application, but I'm not sure where I would get the newer version. It doesn't seem to be part of the ReportViewer 2005 SP1 Redist.
I'll keep this blog updated if I find out anything.
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