Error 2908 is an installation error that can occur when setting up programs like Microsoft Office. There are 5 ways to potentially fix it: 1) Run the setup under a different user profile; 2) Scan and clean any registry errors using a registry cleaner; 3) Reinstall the Windows Installer; 4) Delete a specific registry key; 5) Clean temporary directories using Disk Cleanup. Running the setup under a different user profile is one of the recommended first steps to try and resolve error 2908.

2. Error 2908 is an installation error. Your computer may
show this error while a setup program is performing the
requested tasks, for example, installation of Microsoft
Office and other programs.
5 Ways to Fix Error 2908:

3. Run the setup under different user profile
Registry problems
Reinstall Windows Installer
Delete a Registry Key
Clean Temporary Directories using System Cleaner

4. RUN THE SETUP UNDER DIFFERENT
USER PROFILE
To fix error 2908 in Windows 7, Vista and XP, run the
setup under different user profile. Log-off the active
session, and log-in from a different user profile, if any.

5. Click the Start button, and then point to the Arrow next
to Shutdown option.
Select Switch User option.
Your computer will now log-off.
A screen may appear showing different user profiles that
are available on your machine.
Select another user profile/ account, and log-in with valid
password or security information that you have.

6. Registry Problems
What you required to do is just start a full registry scan,
and if any errors are found, clean them immediately. After
doing so, restart your computer and re-run the setup. To
fix error 2908 in Windows 7, Vista and XP, download a
reliable Registry Cleaner such as the Intel Software
Partner Reginout.

7. Reinstall Windows Installer
To fix error 2908 in Windows 7, Vista and XP, reinstall
Windows Installer as highlighted in the following steps:

8. Click Start, point to All Programs | Accessories.
Right click Command Prompt and select Run as
Administrator.
Type the following commands:
msiexec /unreg
msiexec /regserver
exit
Re-start your setup program.

9. DELETE A REGISTRY KEY
 Click Start, and then Run.
Type RegEdit and press ENTER.
Expand the following registry path:
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWin
dowsCurrentVersion InstallerUserDataS-1-5-21-
1123561945-1935655697-1060284298-1003Components
AD95649F068525549B26938D7D18FEA7
From the right hand side panel, right click the following string
and select Delete option. Confirm the change.

10. B3414A45B4B628042B8446B35265C1BC
Caution: Modifying the registry in improper manner may
result in loss of important data, and system becomes
unstable. Be sure to backup the registry before making
any change in it.

11. CLEAN TEMPORARY DIRECTORIES
USING SYSTEM CLEANER
Click Start, point to All Programs Accessories
System Tools.
Select Disk CleanUp.
Select the system drive, usually drive C.
Press ENTER or click OK.

12. Wait till the program analyzes the amount of disk space
that can be free-up.
After the result is shown on your screen, click the
appropriate button to delete temporary files and similar
contents from your hard disk.
Re-run the setup program.