Version 2.7 of the Pubcookie ISAPI Filter is backwards compatible with all previous versions. You should be able to upgrade a working configuration simply by swapping in the new DLL and bouncing the server. No need to get a new c_key. No need to change any registry settings. Existing applications should go on working the same as before.
Download and extract the current Pubcookie ISAPI Filter 2.7.x distribution:
Download pubcookie-filter-2.7.x.exe
Double-click pubcookie-filter-2.7.x.exe
Change the target folder if you like. C:\Pubcookie is the default.
Click Unzip.
Now copy the new DLL into place:
Open the C:\Pubcookie folder in Windows Explorer.
Right click PubCookieFilter-2.7.x.dll and select Copy to make a copy of the DLL.
Open the %Systemroot%\System32\Inetsrv\Pubcookie folder in Windows Explorer. You should see your active Pubcookie DLL in this folder.
Right click in this folder and select Paste to put a copy of PubCookieFilter-2.7.x.dll into this folder.
Check the properties of PubCookieFilter-2.7.x.dll and make sure that SYSTEM (that is, IIS) has Read & Execute permission.
Now use the Internet Service Manager to swap in the new DLL:
Start the Internet Service Manager (usually found in your IIS program folder).
Right-click on the Web site where you want to update Pubcookie and select Properties from the popup menu.
In the ISAPI Filters tab, select the active Pubcookie filter.
Click Remove. This will remove the current Pubcookie filter.
Click Add...
Enter "Pubcookie 2.7.x" for Filter Name. For Executable, click Browse... and locate the new DLL you copied moments ago (i.e. %Systemroot%\System32\Inetsrv\Pubcookie\PubCookieFilter-2.7.x.dll). Select it in the dialog box and click Open.
Click OK. And click OK.
Right-click your Web site. Stop and restart it.
Verify that the new Pubcookie filter is active by reviewing the Properties of your Web site again. The status of the Pubcookie filter should be loaded; the arrow should be up and it should be green.
Note: Once you have upgraded the Pubcookie filter, you might also update your applications to use the new logout features. To learn more, refer to Configuring Logout for Pubcookie-Protected Websites.
