What to do if “Network Discovery” does not turn on in Windows

Once I noticed on one of the computers that nothing was displayed in the network environment, and after selecting “Enable network discovery” in “Control Panel \ Network and Internet \ Network and Sharing Center \ Advanced Sharing Options”, the choice was still on “Disable network discovery”.
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How to change the welcome screen image in Windows 7

To change the welcome screen image in Windows 7, you must:

1) Open the registry editor, to do this, click the “Start” menu and in the “Run” line we write “regedit” and press the “Enter” key.

2) In the registry editor that opens, right-click on the “HKEY_LOCAL_MACHINE” line, select “Find” and in the search bar type “OEMBackground”, click “Find Next”.
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The solution of the error “d3dx9_31.dll was not found” when running games

This error may occur if the computer has an old version of DirectX installed, so it is solved simply by downloading and launching a web installer that automatically updates DirectX via the Internet to the latest version.

Download the DirectX web installer from the link below:

https://www.microsoft.com/en-US/download/details.aspx?id=35

View and configure sharing of files and folders Windows from the command line

I will give an example of some commands for setting up sharing of resources.

View shared resources:

net share

Deleting a shared resource:

net share <sharename> /delete

Sharing a folder:

net share sharename=C:\dir

Example of disconnecting users from the share:

net session \\pc1 /delete

To close an open network file, use the command:

net file file_id /close

An example of granting user rights to a file (N – not set, W – write, C – change, F – full access):

cacls file.txt /G User:w

To cancel user access to a share:

cacls /R User

We allow up to 5 users to simultaneously connect to a shared resource:

net share sharename /users:5

Example of caching settings from a share (manual/BranchCache/documents/programs/none):

net share myshare /cache:manual

I want to note that when opening a share to a resource in the firewall, the following ports should be opened: TCP 139, TCP 445, UDP 137, UDP 138.

See also my articles:
Installing and using the nbtscan network scanner
Some information about the virus encryptor Trojan.Encoder.12544 attacked 06/27/2017

Resolving Error 0x80246017 in Windows 10

You can solve the error 0x80246017 by quickly completing a few points:

1) Open the command prompt as administrator.

2) Execute the following commands in it:

reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsSelfHost\Applicability" /v "BranchName" /d "FBL_AWESOME1501" /t REG_SZ /f
reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsSelfHost\Applicability" /v "ThresholdRiskLevel" /d "low" /t REG_SZ /f
reg delete "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsSelfHost\Applicability" /v "ThresholdInternal" /f
reg delete "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsSelfHost\Applicability" /v "ThresholdOptedIn" /f

Done, the error should not be.