Python installation Error

Question

Hey,

I need some help getting Python 3.1.1 installed on my computer. Whenever I try to install it, an error message pops-up to say that "The System Administraton has set policies to prevent this instalation". I am the administrator. I THINK I have found the place to chage this in Administative tools: "Local Security Policy", I just need to know what Sub-setion and policy I need to change in order to install it.

Any help would be appreciated.

Thanks.

Answer 1

Hi Lance Volcanix,

Modifying REGISTRY settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of REGISTRY settings can be solved. Modifications of these settings are at your own risk.Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click on the link below.*http://support.microsoft.com/kb/256986/EN-US/*

Follow the instructions in the link below which might help you in resolving the issue.

1. Click on Start.

2. Type in Administrative tools in start search and hit enter.

3. In Administrative tools open Local Security Policy.

4. In Local Security Policy right click Software Restriction Policies and click “New Software Rectriction Policy”.

5. Now Left click on software restriction policies and in the right-hand window you should see enforcement.

6. Double-click on enforcement and set the policy to apply to “All Users Except Local Administrators”

Check if the issue is resolved.

If that does not work, you may go ahead and follow the instructions below.

1. Click on start.

2. Type in Regedit and hit enter.

3. Locate HKLM\Software\Policies\Microsoft\Windows\Installer

Create: DisableMSI       Type: REG_DWORD  value = 0   Browse to HKEY_CLASSES_ROOT\Installer\Products\

Search the list for the product that is causing the error and delete the folder in the products folder and check if the issue is resolved.

Using Third Party Software, including hardware drivers can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the use of Third Party Software can be solved. Using Third Party Software is at your own risk.

Please post back and let us know if this has helped to resolve your issue.

Regards,

KarthiK TP

Answer 2

1. Click on Start.

2. Type in Administrative tools in start search and hit enter.

3. In Administrative tools open Local Security Policy.

4. In Local Security Policy right click Software Restriction Policies and click “New Software Rectriction Policy”.

5. Now Left click on software restriction policies and in the right-hand window you should see enforcement.

6. Double-click on enforcement and set the policy to apply to “All Users Except Local Administrators”

1. Click on start.

2. Type in Regedit and hit enter.

3. Locate HKLM\Software\Policies\Microsoft\Windows*Installer*

I've used bold on the problems in the above

When I right click on 'Software Restriction Policies', it gives me the option to delete all of the contents of the section :/, but no option to select 'New Software Rectriction Policy'. Even after i changed the enforce option to 'all users except local admin' and rebooted, it didn't let me install

In regedit, I went throught the necesary path, H_key_local_machine, all the way to windows, but there was no 'installer' subfolder.

Help, please :'(

Answer 3

Hi Lance,

Did you back up the registry before you tried the steps provided by Karthik?

1.       You will find Installer folder will be there if you have followed the step correctly.

( Locate HKLM\Software\Policies\Microsoft\Windows\Installer)

If you don’t find the installer folder then you may try to restore the registry backup or perform a system restore on your computer so that you can bring the registry to the previous state. 

2.       You might get this error (The System Administraton has set policies to prevent this instalation") when you have the previous version of the application on the computer. So, uninstall Python completely using windows cleanup utility and then try to install the software and let us know the status.

http://support.microsoft.com/kb/290301

Bindu S -- Microsoft Support

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Answer 4

not really...

Answer below