I have two vista 64 computers. I have a external hard drive on one and it works fine, and I set file sharing on and advanced permission to full. on my second computer when I try to get to the external hard drive it comes up with I don't have permission or file sharing.

Hi, Thank you for your post! Please follow the below instruction and restart computer. 1. Click Start. 2. Type regedit, and then click OK. 3. Navigate to the following key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanmanServer\Parameters 4. In the right pane, double-click the IRPStackSize value. NOTE: If the IRPStackSize value does not already exist, use the following procedure to create it: a) In the Parameters folder of the registry, right-click the right pane. b) Point to New, and then click DWord Value. c) Type IRPStackSize. IMPORTANT: Type "IRPStackSize" exactly as it is displayed because the value name is case-sensitive. 5. Change the Base to decimal. 6. In the Value Data box, type a value that is larger than the value that is listed. If you created the IRPStackSize value using the procedure described in step 4, the default value is 15. It is recommended that you increase the value by 3. Therefore, if the previous value was 11, type 14, and then click OK. 7. Close the Registry Editor. 8. Restart the computer. Regards, Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”