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Windows 7 Access denied Issues

In most cases,  if you receive "Access denied" in Windows 7, it is permission issues. Here are some cases.

Case 1:
Q: I just installed a 3D engine called panda- something that took me minutes to get running on XP and linux. Unfortunately I can not run the samples via the command line using "python filename". I have taken ownership of the folder, gone through all the security/privacy options but am still getting "python: cannot open file 'filename': [Errno 13]: permission denied. It seems every day I am running into these sorts of problems which I never saw on XP.
How can I solve this problem (I am assuming it is a security issue with python so maybe I should direct this question to a python forum too?
And how can I have a more usable system that doesn't take all these extra steps to get simple things done inside windows 7?

A: Which folder is it trying to access? Some system components folders cannot be modified even after we take ownership.

You may try to set the program to run as administrator. Please right-click on the file, click on Compatibility tab. Select to run this program as administrator. Also you may select to run the program in Windows XP SP3.

Case 2:

Q: I have a Windows 7 system that is in a Workgroup. I have shared the C root with a sharename called CDrive. I am trying to access this share with a Windows XP system that is enrolled in a Domain.

From the XP system command prompt, I call net use z: \\win7system\cdrive /user:myuser (myuser is an administrator account on Win7System). The net use completes successfully, however, when I try to access the shared drive I get a message "Access is denied". Why is this happenning and how can I correct it?

Note: I am able to access the pre-defined homegroup shares, but not the C Root share that I set up through WIndows Explorer.

I have seen other posts on similar sharing issues with Windows 7 and XP, but most seem to indicate that both the XP and Windows 7 system must belong in the same workgroup. What about if they do not like in my case?

A: I have found answer to your question. Solution is realy easy just a one key in registry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
create or modify 32-bit DWORD: LocalAccountTokenFilterPolicy. This is a DWORD value. Set it to 1.

A reboot is necessary after creating / updating the key

Case 3:

ANTIVIRUS Software!!!! I had a copy of my old windows harddrive on a non-OS drive that had a “Windows folder” and even though I took ownership and set the correct permissions, I couldn’t delete the files. “ACCESS DENIED”. I turned off Norton and was able to delete everything. No unlocker or lockhunter required. I also remove trusted installer from the permissions list, but this didn’t help with antivirus on.

Case 4: If you get these error when access Windows 7 shared folders:  "Access is denied" or "You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions." you may try to modify this registry key.

1.Goto Windows Start Menu -> Run, typin regedit and press Enter key to launch Windows Registry Editor.
2.Navigate to - HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/Lsa
3.Change value of key restrictanonymous to 0.
4.Reboot computer to apply change.

Read more: http://www.addictivetips.com/windows-tips/windows-7-access-denied-permission-ownership/#ixzz0pZ0lrhSF

Case 5: Have to turn UAC off, then it's working.

Case 6: I found that if I right-click C:, click properties, click security, click advanced, click owner, click edit, select my username, and check 'replace owner on subcontainers and objects', and click apply, I get no more annoying 'access denied' messages..

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