You cannot register RHEL, you get rhsm.connection.RestlibException: HTTP error (401 - Unauthorized): Service not available, please try again later

 You cannot register RHEL, you get rhsm.connection.RestlibException: HTTP error (401 - Unauthorized): Service not available, please try again later

subscription-manager register --username your_username --password 'your$password'

subscription-manager attach --auto

To re-register-

Un-register the system :

sudo subscription-manager remove --all
sudo subscription-manager unregister
sudo subscription-manager clean

Re-register the system :

sudo subscription-manager register
sudo subscription-manager refresh

Search for the Pool ID :

sudo subscription-manager list --available

Attach to subscription :

sudo subscription-manager attach --pool=<Pool-ID>

Clean YUM and cache :

sudo yum clean all
sudo rm -r /var/cache/yum

Update the resources :

sudo yum upgrade

Unable to upload PFX certificate exported from Cisco ASA firewall.

 openssl enc -base64 -d -in Cert.pfx -out converted.pfx

RDS- Kill Session from Command Line

  - Open powershell as administrator.

 - run qwinsta.exe

 - Run rwinstal.exe <session#>

Exchange TLS Issues

 Test TLS on Exchange-

 - Download SMTP Console from Socket Labs.
https://www.socketlabs.com/smtp-server-connection-diagnostics-tool/

 - Connect to exchange, do "EHLO domain.com", then click startls from the menu.

Cisco Anyconnect keeps disconnecting and reconnecting to ASA.

 Cisco Anyconnect keeps disconnecting and reconnecting to ASA.

Cisco defaults to DTLS which uses UDP port 443.  If it fails, it connects over TLS over TCP 443.  To resolve this, make sure UDP port 443 is open outbound to the firewall.

How to flush DNS Cache on vCenter Appliance (VCSA)

 systemctl restart dnsmasq

Office Registry Fixes for Various O365 Issues

Outlook ignores autodiscover because your domain is part of an O365 instance, even though you use on-prem exchange-

Open RegEdit
Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover
New DWORD entry, ExcludeExplicitO365Endpoint -  value of 1.
------------------------------------------------------
You are using SAML and you get a white or invisible ghost window instead of a login screen-

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity]
"DisableADALatopWAMOverride"=dword:00000001

If the above key change alone does not work, edit this additional Registry key:
[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity]
"DisableAADWAM"=dword:00000001

---------------------------------------------------------------

Prevent Outlook from ignoring autodiscover and connectiving to office 365

[HKEY_CURRENT_USER\Software\Microsoft\Office\x.0\Outlook\AutoDiscover]
"ExcludeExplicitO365Endpoint"=dword:00000001

---------------------------------------------------------------

You get a white window or one that disappears quickly-

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity]

"DisableADALatopWAMOverride"=dword:00000001

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity] 

"DisableAADWAM"=dword:00000001

 

REMOVE EnableADAL under-

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity .

ADD-

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity]

"DisableADALatopWAMOverride"=dword:00000001

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity] 

"DisableAADWAM"=dword:00000001

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