ArcGIS Desktop application startup is slow when custom components are installed

Last Published: April 25, 2020


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.

Solution or Workaround

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.

  1. Open the ESRI Component Category manager by navigating to C:\Program Files\ArcGIS\Bin in Windows Explorer and double-clicking the categories.exe.

    Search the following categories for the ArcGIS Desktop application that is slow to startup:

    ESRI Mx CommandBars
    ESRI Mx Commands
    ESRI Mx Extensions

    ESRI Gx CommandBars
    ESRI Gx Commands
    ESRI Gx Extensions

    ESRI Sx CommandBars
    ESRI Sx Commands
    ESRI Sx Extensions

    ESRI GMx CommandBars
    ESRI GMx Commands
    ESRI GMx Extensions
  2. For each component category, check to see if any non-ESRI components are installed by selecting the component and checking the path of its source .dll.

    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.

  3. Check if the paths of the custom components found in step 2 are accessible.
  4. If any inaccessible components are found, unregister them properly. First, use the repair/uninstall program that comes with the custom component setup. If that program does not exist, use the ESRI Component Category manager 'Remove Object' command. Re-register the components with the correct source .dll files, if necessary.

Article ID:000008435

  • ArcMap 8 x
  • ArcMap 9 x

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