Configmgr Client Error ccmsetup failed with Exit Code 1603 MSI Could not access network location %APPDATA%

Recently,I was troubleshooting configmgr 2012 client issue ,the installation keeps failing with error code :1603 (from ccmsetup.log) ,error says ,”Fatal error during installation”.

in addition to this,I see something interesting about network access location %APPDATA%.

MSI: Could not access network location %APPDATA%\.

File C:\Windows\ccmsetup\{181D79D7-1115-4D96-8E9B-5833DF92FBB4}\client.msi installation failed. Error text: ExitCode: 1603
Action: CostFinalize.
ErrorMessages:
Could not access network location %APPDATA%\.
Could not access network location %APPDATA%\.

From CCMSETUP.Log:

while installing sccm client,It requires to access the environmental variable %APPDATA% from registry location which are are corrupted/Changed for several reasons .

How do I Fix it ?

There is fix available on the support.Microsoft.com and msdn but with different Error Code Error 1606: Could Not Access Network Location.

I have applied the similar fix on the problem computer before reinstalling the ccmsetup.exe.it worked

Here is the simplified fix for you :

1. Open the Registry editor
2. Navigate to the following registry keys HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders

If you look at all the values for the variables in the above pic,you can identify the odd one which is appdata.
3. The correct and default value for AppData should be: %USERPROFILE%\AppData\Roaming

4. It would be better to also check and correct the Appdata Value for the below registry keys as well before we start the installation.

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders\
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders\

Hope it helps !