Hi Kanakaraju,

This is a long shot but in case "case" matters, on all my computer the variable is "ComSpec".

And I assume you added it as a System variable...


On 13/10/2016 6:24 AM, Karre, Kanakaraju (US - Hyderabad) wrote:

I have been trying to install Postgresql server on my machine (Windows 8-64 bit version) but it is failing to install by throwing the following error –

“_There has been an error. The environment variable COMSPEC does not seem to point to the cmd.exe or there is a trailing semicolon present. Please fix this variable and restart installation _.”__


I searched some of the forums where the solution mentioned was to add an environment variable “COMSPEC” with the value – “C:\Windows\system32\cmd.exe”. I did this but the issue persists. Also, there is no semicolon at the end in the value of COMSPEC variable.

I tried installing 2 versions of Postgresql but I am getting the same error for both. The versions are as follows :



Since the COMSPEC variable is present, it got me thinking if this is a general exception thrown while installing postgresql.

Also, are there any pre-conditions to be checked before installing the server. Could a particular software installation be hindering the postgresql installation (At some forums, it was suggested that the anti-virus uninstallation solved the issue. Could this be the reason?)

Please let me know how to resolve this.

*Thanks & Regards*


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