How to fix error 27848 / 2738 at Cisco VPN installation

Sometimes (even with new machines) there are problems at the client’s installation, for example:

Error 27848: Deterministic Network Enhancer installation requires a reboot first, to free locked resources.

After that the installation process is rewinded back and canceled. To fix it, open the command prompt as administrator (Right click on cmd then choose Run as Administrator). Type those commands and press Enter:

cd %systemroot%\system32
regsrv32 /u dneinobj.dll

If Vista complains about regsrv32, then maybe the program is not on the system path. You must then use absolute path:

C:\Windows\system32\regsrv32 /u C:\Windows\system32\dneinobj.dll

For error 2738

Internal Error 2738

follow the same procedure as above, just replace the command regsrv32 /u dneinobj.dll with

C:\Windows\system32\regsrv32 C:\Windows\system32\vbscript.dll

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