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After yesterday's question I've tried to install Office 2007.

I have replaced many components and at the beginning, the installation process was running fine. In the middle part however it outputs the following error:

Error 1935:An error occured during the installation of assembly components
{97F81Af1-0E47-DC99-A01F-c8B3B9A1E18E},Hresult:0x80070BC9

What is cause of this error?

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up vote 2 down vote accepted

Repair the Microsoft .NET Framework version 2.0 installation

To repair the Microsoft .NET Framework version 2.0 installation, follow these steps: Click Start, click Control Panel, and then click Add or Remove Programs. In the Currently installed programs list, click Microsoft .NET Framework 2.0, and then click Change/Remove. Click Repair, and then click Next.

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I had the same issue installing on a clean installation of 64-bit Windows 7. I went to Control Panel → Programs and Features → Turn Windows features on or off, cleared the checkbox for .NET and restarted. After that the installation of Office worked. Finally I turned the features back on and updated Windows.

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