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Solved: is not accessible. You might not have permission to use this network resource

May 29, 2009 12:25AM PDT

My system is 3 computers running Windows XP Professional on a Microsoft Workgroup Network with usernames that DO NOT use passwords. It is used in my home and access is restricted to my family and not the Internet by the personal firewall and router firewalls.

This lack of a user password has caused problems in the past with Task Scheduler not working correctly and I have modified the Registry under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa to change limitblankpassworduse to "0" instead of "1" to make the scheduler work correctly.

I purchased a new terabyte external hard drive that was pre-formatted as an NTFS single partition to use as a backup drive using Norton Ghost.

I regularly have shared the hard drive on one of my computers with the other two, so I am familiar with sharing and Security rights.

When the new drive was added to the main computer either as a USB attached drive or as an eSATA connection, I could read and write to the drive from the main computer. However, when I marked it as a shared drive with full rights to others, I could see it from my remote networked computer but when accessed I would get the message: "<drive name> is not accessible. You might not have permission to use this network resource"

I have tried many suggestions from the web including the ones from Microsoft support. They include:

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Comments
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Thank-you!
Jun 6, 2010 8:48AM PDT

I was getting very frustrated that in order to copy files from my SATA hard drive that I pulled from a crashed computer that I needed to connect it to an XP machine and copy the files over via wifi.

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Solved: is not accessible. You might not have permission
Jun 23, 2010 4:44AM PDT

I know this is an old thread, but still, THANK YOU!!!!! I have been searching and searching for a solution to my problem and have tried most of the things you list, to no avail. However, your solution worked great on my new Win 7 64-bit box.

I did not have an Everyone user group, so I had to create one 3a:

When viewing the list of groups, Edit... > Add...
Type "Everyone" (no quotation marks) in the "Enter object names to select" box (the object types are "Users, Groups, or Built-in security principals" and the location is your computer).

Click OK (or Check Names and then OK) then continue with step 5.

I did this with all four drives on the computer and now I can access them from another computer.

(There's probably a way to create the Everyone group "above" the drives but I was so excited to discover this trick that I just did it for all four drives.)

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Thank you
Jul 23, 2010 2:22AM PDT

Fought with this problem for over an hour. Thanks man worked great.

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Thanks again!
Aug 31, 2011 3:55AM PDT

Fought with this problem for several hours after my Windows 7 install got corrupted and I got the black screen of death. Ordered a new drive and reinstall Windows, only to find that I couldn't access my old drive. Tried changing/resetting permissions numerous ways and times - but everything failed until I tried the "Everyone" trick.
Well done and Thanks!

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Security change
Oct 26, 2011 6:37AM PDT

Hello retiredtech,
I was doing every step on your list. Although, Step 3 (click the Security Tab) the pc I am using as the backup server doesn't have the Security Tab option.
Now, the other pc (regular pc) does have the security tab.

I don't know what to do. Due to the fact, that I am trying to access the shared folder in my (backup pc) and I cannot find that option tab.

Please advice.
Thank you

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Security Change part II
Oct 26, 2011 6:47AM PDT

I forgot to mention:
OS: Win XP pro

Also: I have another email: if you please email me any guide lines to follow.
Thank you
Email: gruyamail@gmail.com

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Microsoft's Fix
Nov 13, 2011 2:52PM PST
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(NT) Check AV for a firewall.
Nov 27, 2011 7:11PM PST
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Solved:is not accessible. You might not have permission
Sep 4, 2012 2:09PM PDT

1. type regedit then Enter, go to:>Hkey_Local_Machine, System,ControlSet001, Services, LanmanServer, Parameters,
2 right click then go to New DWORD Value just type IRPStacksize and Enter. Change the value of Hexadecimal
into 21 and restart the computer..

<div>
</div>

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WARNING!!!
Aug 13, 2015 10:57PM PDT

I know this post is old, but I thought I'd post this as a warning to anyone else as fool hardy as I was to try editing my registry with instructions i got from a vague reply to a question I didn't ask. I just followed Kentxxx's instructions to the LETTER, on my new $1700 home built windows 10 gaming Pc, and it totally destroyed my windows install, I'm hoping all the hardware is okay but I can't get my second hard drive with windows 7 installed to start up either. Unfortunately because I've literally just got this windows 10 install working I haven't made a restore point yet so I'm currently using win 10's reset feature which is wiping my Pc right now, it's supposed to save my files but wipes all programs (I'm praying hard right now I'll be able to find all the install keys or I'll be in the hole several hundred replacing them) I'll post if I was able to fix it or not (I have my fingers crossed so hard there ready to break)

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Fixed it(Sorta)
Aug 13, 2015 11:17PM PDT

I got it running again, and after the reset it created a html file listing all the removed programs to make it easier to replace them(Gotta love Windows 10). Anyway my guess is I probably shouldn't have tried to use a fix for Xp on 10, but when you are up late and you've got twenty plus tabs open on two different screens trying to figure out how to fix something, you sometimes forget what page you are on. Anyway, I'm not trying to knock Kentxxx, for all I know this works perfectly well on Xp, but I just wanted to prevent anyone else as reckless as I was from doing a regedit without first making sure they're still on the right page.

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Sloved
Oct 25, 2012 7:06PM PDT

I think its may be authentication issue. I face same problem and after searching its resolved.

Open run and than \\ComputerName\Share" /user:Domain\UserName

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