Support Knowledgebase

Adobe Reader 8 fails to install on Vista OS


When you install Adobe Reader 8 on Windows Vista you see the error message, "The Temp folder is on a drive that is full or is inaccessible. Free up space on the drive or verify that you have write permission on the Temp folder."


You have turned off User Account Control or you are logged in using the default administrator account.


Do one of the following solutions:

Solution 1: Enable User Account Control.

1. In Control Panels, choose User Accounts.

2. Click "Turn User Account Control on or off".

3. Check the box to "Use User Account Control (UAC) to help protect your computer" and then click OK.

4. Restart your computer.

5. Install Adobe Reader 8.

Solution 2: Create a new user account with administrator rights and install under this profile.

1. In Control Panels, choose User Accounts.

2. Click" Manage another account".

3. Click "Create a new user account".

4. Enter a new user name, select the Administrator radio button, then click Create Account.

5. Log in to the computer with this new account and install Adobe Reader 8.

Solution 3: Run the Adobe Reader set up files extracted from the installer.

1. Download the Adobe Reader installer from When you are prompted to run or save the file, choose save. Save the file to your desktop.

2. On the Desktop, double-click the AdbeRdr80_en_US file, click Run.

3. Please wait while the Adobe Reader setup is being processed.

4. When the "Open File - Security Warning dialog displays, do the following:

a. On the Windows task bar, choose Start.

b. In the Start Search window, type c:\users\ username \AppData\LocalLow\Netopsystems\temp\ then click on the link to open the temp folder.

c. Drag the Adobe Reader 8.0 folder to your desktop and close the search results window

d. Click Cancel in the Open File - Security Warning dialog.

e. Click Cancel when" the operation was canceled by the user" dialog appears.

5. Open the Adobe Reader 8.0 folder on your desktop.

6. Double-click the AcroRead file to start the Adobe Reader installer.

7. Click Run.

8. Click Next.

9. Click Install.

Background information

On Vista, with User Account Control disabled, there is no write and execute access to the %TEMP% folder.

Related Documents

Document 333643
Last edited - 01/04/2007


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