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Error: HTTP 404: "The page cannot be found" when trying to launch ArcGIS Server Manager

Error Message

The ArcGIS Server Manager logon page displays "The page cannot be found" with HTTP 404 error. No other error messages display. REST displays the same message.

Cause

The Microsoft patch KB958481 changes the Web Service Extension for ASP.NET 2.050727 to 'Prohibited' in Internet Information Services Manager. ArcGIS Server Manager requires ASP.NET 2.05072 to be allowed.

Confirm this update is installed in Add or Remove Programs. Be sure 'Show Updates' is checked at the top. Scroll down to Microsoft .NET Framework 2.0 Service Pack 2. The KB958481 is listed there. The patch affects Windows 2003 and XP.

Solution or Workaround

Open Internet Information Services Manager and set the Web Service Extension for ASP.NET 2.050727 to 'Allow'.

  1. Click Start > Control Panel > Administrative Tools > Internet Information Services Manager.
  2. Click on the Web Service Extensions folder.
  3. Highlight the ASP.NET 2.050727 and click 'Allow'.
  4. ArcGIS Server Manager and REST should now work.

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