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ArcGIS Desktop applications (ArcCatalog, ArcMap, ArcScene, or ArcGlobe) take a long time to start when custom components have been installed.
Custom components, such as toolbars or commands and extensions, registered into a number of component categories are created during application startup or when the Customize dialog box is displayed. If there are a large number of inaccessible custom components registered on the machine, there may be a significant delay.
Example 1: \\<MyServer>\myComponents.dll is registered on the computer but <MyServer> is shut down or inaccessible due to user permission changes, so myComponents.dll is no longer available.
Example 2: A registered .dll file is deleted or moved without being unregistered properly.
Find the registered components and their .dlls that are inaccessible. When these components are properly unregistered and re-registered, startup time should be improved.
Components are reviewed through the ESRI Component Categories Manager. For more information on this tool, review the link in the Related Information below.
If the component is a .NET object, the error message "File not found: mscoree.dll" displays. Find the actual .NET assembly .dll where the component resides. A useful tool for this is the OLE Viewer.