Error message when you try to install Office 2010: "Error 1920. Service 'Office Software Protection Platform' (osppsvc) failed to start.

When you try to install Microsoft Office 2010, you may receive the following error message:

This issue occurs when the Network Service account does not have the correct permissions on C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform.

To resolve this issue, you must give the Network Service account full control on the 'OfficeSoftwareProtectionPlatform' folder.

To have us fix this problem for you, go to the "Fix it for me" section. If you prefer to fix this problem yourself, go to the "Let me fix it myself" section.

Fix it for me

To fix this problem automatically, click the Fix it button or link. Then click Run in the File Download dialog box, and follow the steps in the Fix it wizard.

Fix this problem

(http://go.microsoft.com/?linkid=9778616)

Microsoft Fix it 50733
Notes

• This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
• If you are not on the computer that has the problem, save the Fix it solution to a flash drive or a CD and then run it on the computer that has the problem.

Then, go to the "Did this fix the problem?" section.

Let me fix it myself

To do this, follow these steps, as appropriate for the operating system that you are running.

For Windows XP or for Windows Server 2003


1. Click Start and click Run.
2. Type the following command line, and then press ENTER:

cacls "C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform" /t /e /p "Network Service":F

3. Try the install of Office 2010.

For Windows Vista


1. Click Start, click Start Search, type Run, and then press ENTER.
2. Type the following command line, and then press ENTER:

icacls "C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform" /grant "Network Service:F" /t

3. Try the install of Office 2010

For Windows 7

1. Click Start, click Search programs and files, type Run, and then press ENTER.
2. Type the following command line, and then press ENTER.

icacls "C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform" /grant "Network Service:F" /t

3. Try the install of Office 2010.

Did this fix the problem?

• Check whether the problem is fixed. If the problem is fixed, you are finished with this section. If the problem is not fixed, you can contact support
  (http://support.microsoft.com/contactus)
  .
• We would appreciate your feedback. To provide feedback or to report any issues with this solution, please leave a comment on the "Fix it for me
  (http://blogs.technet.com/fixit4me/)
  " blog or send us an email
  (mailto:fixit4me@microsoft.com?Subject=KB)
  .