Set Adobe Reader as default program, override Microsoft Edge as default PDF program

Cause: legacy software installed in Windows 10 computer. 

Solution Method 1:

Uninstall the legacy software. (The most efficient way)


Solution Method 2:

1. First, set Adobe Reader as default program.

2. Export current "running default program" to xml.

    Run powershell or command prompt as administrator. Execute command below:

    Dism /Online /Export-DefaultAppAssociations:C:\TempAA.xml

3. Open the C:\TempAA.xml with notepad. Copy the contents and paste to new notepad, and name as OEMDefaultAssociations.xml 

4. Copy and replace the OEMDefaultAssociations.xml to %systemroot%\system32 (C:\windows\system32). (Do a backup before you replace the original file)

#.net framework installation did not succeed

Installation did not succeed.
.NET Framework 4.6.2 has not been installed because:
A certificate chain could not be built to a trusted root authority.

Cause: No latest windows update.

Solution:

1. Download this cert http://www.microsoft.com/pki/certs/MicRooCerAut2011_2011_03_22.crt and install in local computer trusted root.

2. Install .Net framework 4.5.2 https://www.microsoft.com/en-my/download/details.aspx?id=42642

3. Install KB3135996 https://www.microsoft.com/en-us/download/details.aspx?id=51476 

3. Install .Net framework 4.6.2 https://www.microsoft.com/en-us/download/details.aspx?id=53344

Hope this can solve your problem. Thank you for visit this blog.

#Activate Windows via Phone Windows Server 2012/2016 and Windows 10

1. From Run / Command Prompt, type slui 4.

*Other options

slui 2 = Show activation status
slui 3 = Activation via Internet
slui 4 = Activation via phone
slui 5 = Show all activation methods
slui 6 = Activation wizard
slui 7 = Simulate last day activation

#WSUS - The operation being requested was not performed because the user has not logged on to the network. The specific service does not exist. (0x800704DD)

Event Error:

Content file download failed.

Reason: The operation being requested was not performed because the user has not logged on to the network. The specific service does not exist. (0x800704DD)

WSUS error:

The files for this update failed to download. The update can be approved but will not be available to computers until the download is complete. Click Retry Download to start the download again.

Solution:

1. Confirm log on user for WSUS services and BIT services is correct.

WSUS service:
User: NT AUTHORITY\NetworkService
Pass: Blank

Bit services:
User: Local System account (must run local system account)

2. After change the log on user, Restart both Services and retry download.