It seems that iTunes 9.1 is incompatable with windows 7. Right click on the iTunes icon choose the compatable option and walk through the wizard. It will restore iTunes to a pevious working version.

When I re-install iTunes on my Windows 10, after reset my PC, I got the error as below: iTunes Installation error: “Microsoft VC80.CRT.TYPE=”win 32″.version=8.0.50727.6195″.publicKeyToken=’1fc8b3b9a1e18e3b”.processorArchitecture “x86″”.Please refer to help and support for more information. HRESULT:0X800700C1

1. Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
2. Microsoft.VC80.CRT, type='win32', version=8.0., public KeyToken='1fc8b 3b 9a 1e 18e3b', processor architecture ='amd64' Please refer to help and Support for information HRESULT: 0x80070BC9.

Download red alert 2. It annoied my half an hour to solve the problem. At last, I got the answer.

Itunes Error Microsoft Vc80 Crt Download

My Windows 10 may need a particular library file which is not included. It is Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package MFC security Update.

Microsoft Vc80 X86

Download here Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package MFC Security Update

Itunes Error Microsoft Vc80 Crt Installer

I download and install the x64 file. Then re-try the installation of iTunes, it is OK now. No Error comes out.