Microsoft Excel or Microsoft Word does not appear in DCOM Configuration snap-in

There are times when you may want to configure permissions for Excel in the DCOM configuration tool. This is a fairly straightforward process if you follow - "Setting Process-Wide Security Using DCOMCNFG". But you may run into a problem where "Microsoft Excel Application" doesn't appear in DCOM. Additionally, you may receive the following error when working in your application:

Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80070005

To view whether "Microsoft Excel Application" does appear in the DCOM list, you need to open the DCOM configuration tool in Windows. It's important to note that if you install 32-bit Microsoft Office on a 64-bit machine, you may need to use the 32-bit DCOM config manager to view the programs, depending on your operating system.

"On x64 operating systems from Windows XP to Windows Server 2008, the 64-bit version of DCOMCNFG.EXE does not correctly configure 32-bit DCOM applications for remote activation. This behavior causes components that are meant to be activated remotely instead being activated locally. This behavior does not occur in Windows 7 and Windows Server 2008 R2 and higher versions." -

To correctly configure 32-bit DCOM applications for remote activation, follow these steps:

From a command line, enter the following:

C:\WINDOWS\SysWOW64>mmc comexp.msc /32

You should be able to see "Microsoft Excel Application" in the list. However, if the entry is still missing after taking this step, or when on Windows 7 or Windows 2008 Server R2, try the following to resolve:

Restart the Machine 

After an install of Office 2007 or 2010 a reboot of the operating system may be necessary for the appropriate reg keys to be added. A restart of the machine is the quickest and easiest way to resolve this problem, though if the problem remains, you may need to take further steps.

Re-Register the Excel Application

From a command prompt, navigate to where the Excel.exe is located and re-register the application. On a 64-bit machine, this is located (by default) under C:\Program Files (x86)\Microsoft Office\Office14 for Office 2010 and C:\Program Files (x86)\Microsoft Office\Office12 for Office 2007.

1.       Open a command prompt – START, RUN, type CMD.EXE but don’t hit ENTER just yet
2.       Find CMD.EXE in the ‘All Programs” list. Right click it and left click on “Run as administrator”
3.       This should open a command prompt. Now, type the following:


And hit ENTER

CD C:\Program Files (x86)\Microsoft Office\Office14

And hit ENTER


And hit ENTER

* Note, for Microsoft Word the CMD would be:   WINWORD.EXE –REGSERVER


Modify Access and Activate Permissions

1.     In DCOMCNFG, right click on the My Computer and select properties.
2.     Choose the COM Securities tab
3.     In Access Permissions, click "Edit Defaults" and add Network Service to it and give it "Allow local access" permission. Do the same for <Machine_name>\Users.
4.     In launch and Activation Permissions, click "Edit Defaults" and add Network Service to it and give it "Local launch" and "Local Activation" permission. Do the same for <Machine_name>\Users
5.     In DCOMCNFG where you see your list of applications, click Action > Refresh

Verify that the Reg Key Exists

1. Launch the registry editor (START, RUN, type REGEDIT and hit ENTER)
2. Navigate to


3. If this key does not exist, "Microsoft Excel Application" will not show up under DCOMCNFG. You will need to import this key from a working machine. Alternatively, you can check the permissions on the AppID key to make sure that the proper permissions exist for entries to be made to this registry key. Right click the AppID key and left click Permissions. The permissions groups listed SHOULD be inheriting permissions from the HKCR key. Remember, if the checks in the boxes are grayed and cannot be checked or unchecked, this means they are inheriting permissions from their parent. A black check mark means this key is not inheriting permissions from the parent and can be set here. Under the "group or security names" window you should see the following:

CREATOR OWNER - with "special permissions" checked
SYSTEM - with "Full Control" and "Read" checked
Administrators ([Machine Name]\Administrators) - with "Full Control" and "Read" checked
Users ([Machine Name]\Users) - with "Read" checked

If the permissions on AppID are not correct, add the correct permissions to the key and try a repair of office and then restart the machine.

* Note that the APPID for Word is different. Look for HKEY_CLASSES_ROOT\CLSID\{00020906-0000-0000-C000-000000000046}

Comments (21)
  1. Amber says:

    * Note that the APPID for Word is different. Look for HKEY_CLASSES_ROOTCLSID{00020906-0000-0000-C000-000000000046}

  2. Ignacio says:

    Thank you! This saved me a lot of time. Excellent post.

  3. Siegbert says:

    Found this very useful.Thanks!

  4. kumar says:

    This is an Excellent post. Saved plenty of time.

  5. Prashanth Chandrasekaran says:

    Simply awesome, saved me lot of time…. Gr8 support, thank you……

  6. chaitanya says:

    Thanks a lot!
    This command helped me to see the dcom config for microsoft excel application…
    C:WINDOWSSysWOW64>mmc comexp.msc /32
    OS: Windows Server 2012 (64bit)

    1. Lance says:

      Thank you this saved me to get it to show.

  7. dinesha says:


  8. dinesha says:


  9. Andrew W says:

    APPID 00020906-0000-0000-C000-000000000046 still doesn’t appear in dcomcnfg (Win7/Office 2010). I still can’t find Word in the DCOM Config.

  10. Sushant Jadhav says:

    Thanks,,,,,,,,,,, it’s saved my one day of life……………………….

  11. Annie says:

    Thanks alot

  12. Varun says:

    tried every step and verified, still Word and excel is not appearing in DCOMCONFIG… any other step

  13. Jit Desai says:

    Yes its Helpful.. If not working after mentioned steps then you export from working system n import it. Good One!!! 🙂

  14. Pritam says:

    I have done setting as you said on one machine and it worked for me. I doing same on another machine it is not working. Second machine is windows 2008 R2 server. on this machine, Dcomconfig it showing "Microsoft Excel Previewer". I set all setting as above.
    still showing error access permission denied.
    Any Help

  15. manish says:

    System.Runtime.InteropServices.COMException (0x8001010A): Creating an instance of the
    COM component with CLSID {00024500-0000-0000-C000-000000000046}
    from the IClassFactory failed due to the following error:
    8001010a The message filter indicated that the application is busy.
    (Exception from HRESULT: 0x8001010A (RPC_E_SERVERCALL_RETRYLATER)).

  16. Nice excel tips. Are you experiencing youtube channel just for this tutorial? In case you have video tutorial, it is good mate 🙂

  17. Jorge says:

    Muito bom esta postagem, realmente e foi muito útil e resolveu o problema que ocorria.

  18. Manisha mali says:

    i am using office 2013 then what is the process From a command prompt, navigate to where the Excel.exe is located and re-register the application.

  19. Sai Prathap says:

    How to access the ms excel interop dll without installing ms office in the server ?

  20. installed office but not seeing in dcomfig, HKEY_CLASSES_ROOT\AppID\{00020812-0000-0000-C000-000000000046} not exists, tried Re-Register the Excel Application and Modify Access and Activate Permissions too but not able to resolve please help.

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