OLEAUT32.DLL could not be opened

Posted on 2009-12-16
Last Modified: 2013-11-14
I am trying to install CALSoft32, but cannot.

When I press INSTALL this message will appear
Copying File:
then shortly after I see this message:

The file 'C:\\Windows\system32\OLEAUT32.DLL' could not be opened. Please check that your disk is not full & that you have access to the destination directory.

Computer Details:
Operating System  = Windows Vista Enterprise 32bit

Please help
Question by:mseufert
    LVL 17

    Expert Comment

    By default, users and admins have read permission to OLEAUT32.DLL file.
    Obviously, this application tries to copy it and overwrite your current file. which already exist.

    You can try do the following:
    - right click on your installation file and try to run it in compatibility mode, also checking the 'run as administrator' checkbox.
    you can try to rename the file OLEAUT32.dll in C:\windows\system32 folder to OLEAUT32_OLD.dll
    and then try to run the installer again.

    Although, I'm not sure why this application tries to copy its version of this file, which is already part of Windows Vista.

    Author Comment

    Thanks for the comment nimatejic.

    I tried doing that but for some reason when I try to Delete the file, Rename it, or anything else it tells me I do NOT have sufficent priviligies.


    I am logged on as Adminstrator
    and I run the install program as ADMINISTRATOR as well.
    How do I work around this?
    It's like my system (only in this case) is not seeing that I am an Administrator.
    Thanks for your help
    LVL 17

    Accepted Solution

    Ok, well, I wouldn't do this, but please just in case make a restore point prior to changing of system files, or make a full backup of system state using Windows Backup.

    Right click on the file | Properties | Security tab | Advanced | Owner tab
    Edit | Click your username | Hit apply
    Click OK 3 times until you close all windows.
    Reopen properties of the file, select security tab, choose Administrators and grant modify permissions.

    You should be able to edit the file now, if not, then this file is probably in use.

    Author Comment

    Thanks for that.
    The process worked and the application finally installed.

    after I removed one .dll I had to remove another.
    I removed 8 total.

    Thanks for you help

    Author Closing Comment

    Thank you.
    It actually worked

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