This problem was fixed by member Siggwiz this way:-
Found about this problem when I tried to open the server directory from a workstation and got this error "Not enough server storage is available to process this command". You can see the directories but can not open them. This notification error should appear in the pc workstation when you try to access your server/where your files are located, otherwise, your login failed error may be caused by something else
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
) How to back up and restore the registry in Windows
To resolve this issue, increase the value of the IRPStackSize registry entry. To do this, follow these steps:
1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry subkey:
If the IRPStackSize entry is not present in this subkey, follow these steps:
1. Click Edit, point to New, and then click DWORD Value.
2. Type IRPStackSize, and then press ENTER.
Note Type IRPStackSize exactly as it appears. The value name is case sensitive.
3. Click IRPStackSize, click Edit, and then click Modify.
4. In the Data Value box, type a larger value, and then click OK.
Note Values may range from 0x1 to 0xC. These values are equivalent to 1 to 12 in decimal notation.
If the problem persists after you complete the previous procedure, increase the value of IRPStackSize more.
After the edit, mede8er can access files without asking for username or password.