Fix printer issue by changing lan manager authentication Level

How to change LAN Manager Authentication Level in Windows 10

LAN Manager Authentication Level lets you set the authentication protocol for network logons. It is possible to change the LAN Manager authentication level using the Local Group Policy Editor and the Registry Editor. If you are using Windows 10 Home version, you can use the REGEDIT method. Otherwise, either method does the same job.

When you connect your computer to a network printer or any other computer in the same network, it requires an authentication protocol for the network logons. It is there to establish a link between your host computer and the network computer or any other device. There are six different authentication levels you can choose, and they are:

Send LM & NTLM responses

Send LM & NTLM – use NTLMv2 session security if negotiated

Send NTLM responses only

Send NTLMv2 responses only

Send NTLMv2 responses only. Refuse LM

Send NTLMv2 responses only. Refuse LM & NTLM

Now, let’s say you want to connect to a network printer, but you are ending up getting an error message saying Windows cannot connect to the printer. At such a moment, changing the LAN Manager authentication level may solve the issue.

Change LAN Manager Authentication Level

It is possible to change the LAN Manager authentication level using the Local Group Policy Editor and the Registry Editor. If you are using Windows 10 Home version, you can use the REGEDIT method. Otherwise, either method does the same job.

Using Local Group Policy Editor

Search for gpedit.msc in the Taskbar search box, and click on the result to open the Local Group Policy Editor on your computer. Next, follow this path-

Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options

Double-click on the Network security: LAN Manager authentication level policy on your right-hand side and choose the Send LM & NTLM – use NTLMv2 session security if negotiated or any other required option from the drop-down list.

Network Printer error 0x00000002,0x0000007a, 0x00004005, 0x00000057, 0x00000006

Click on the OK button to save the change.

Then, restart your computer and check if you can use your network printer or not.

Using Registry Editor

Search for registry editor in the Taskbar search box, click on the search result, and select the Yes option to open the Registry Editor on your computer.

Then, follow this path-

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa

Here you have to create a REG_DWORD value. To do so, right-click on the Lsa key, select New > DWORD (32-bit) Value, and name it LmCompatibilityLevel.

Now, enter the Value data as mentioned below.

Send LM & NTLM responses: 0

Send LM & NTLM – use NTLMv2 session security if negotiated: 1

Send NTLM responses only: 2

Send NTLMv2 responses only: 3

Send NTLMv2 responses only. Refuse LM: 4

Send NTLMv2 responses only. Refuse LM & NTLM: 5

For that, double-click on the REG_DWORD value, enter 1 or any other Value data in the box, and click the OK button.

Network Printer error 0x00000002,0x0000007a, 0x00004005, 0x00000057, 0x00000006

Next, restart your computer to get the change.

That’s it! This is how you can change LAN Manager authentication level in Windows 10.

How to turn off Windows 10 updates

How to disable Windows 10 update permanently follow the steps

Open start. 

Search for gpedit.msc. and click the top result to launch the local Group Policy editor. 

Navigate the following path. 

Computer configuration> administrative templates> Windows components> Windows update. 

After that. 

Double-click the Configure Automatic Update

Policy on the right side. Check the disabled option to turn off automatic update permanently on Windows 10. Click the play button. Click the okay button

Click Apply button, click OK button. 

How to disable automatic updates with registry. 

You can also disable automatic updates using the registry in at least two different ways. 

Like when using the local Group Policy editor, 

Warning. This is a friendly reminder that editing. The registry is risky and can cause irreversible damage to your system . If you don't do it correctly. It is recommend to make full backup of your PC before proceeding. 

Disable updates. 

To disable Windows updates, permanently modifying registry. Use the steps:

Open start. 

Search for regdit and click top result to launch the registry editor. 

Navigate to the following path. 

HKEY_LOCAL_MACHINE\SOFTWARE\POLICIES\Microsoft\Windows. 

right click the windows (folder)key. Select the NEW  submenu and then choose key option. 

Name the new key WindowsUpdate and press enter

Right-click, the newly created key and the NEW submenu and choose the key

Name the new key AU and press enter. 

Right-click the AU key select the NEW Sub menu and choose the dword (32-bit )value option. 

Name the new key NoAutoUpdate and press enter. 

Double click newly-created, key, and change, its value from 0 to 1. Click the ok button. Restart your computer

Or you can create a registry file

Copy the test below and paste it into a notepad

And save the file as.   noupdate.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate]

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU]

"NoAutoUpdate"=dword:00000001