Windows 10: Cannot access specific server ports from 1 PC in whole network

Hello all, We have 2 custom email servers, lets say mail.server1.com and mail.server2.com. Main problem is that we couldnt set up Outlook to connect to one of those servers Each server is for specific users. SO while troubleshooting I checked connectivity to with the PS command belowtnc -COmputername mail.server1.com -Port 993 andtnc -COmputername mail.server2.com -Port 993Ping succeeds for both but for server2 the TCPTestsucceeded returns "FALSE"This occurs only on one computer out of many in a row, in the exact same network, With the same AV policy Bitdefender .Tried to disable all AV mo

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Error: "Server PC is not accessible", "The network address is invalild" on Windows 10

Hi Gavin,

Apologize for the delay in response to your issue.

• Do let us know if your device is connected to a Windows Server?
• Have you tried the troubleshooting steps suggested in the Microsoft help article in my previous post and check if it helps?

Step like: Run the Network troubleshooter, Update the rivers, Rollback the drivers, turn off firewalls etc..

Try the above troubleshooting steps update us the status for further assistance.

Thank you.

 

Does windows(10/server-2016) have privileged ports ?

I can bind to any un-used privileged ports with out admin credentials. Is this expected ? Is there no concept of privileged ports in new versions of windows ?

Below are the steps I followed:

1. Logged in as non-admin user in Windows-server 2016.
2. Installed python and started the server on port 80 using python -m SimpleHTTPServer 80
3. Another user on the same system could access using http://localhost

Can anyone provide more in-sight into this ?

 

Cannot access shared network drive


Personally, I wouldnt use Everyone. If anyone hacks into you, they have full access to everything and can demolish everything on your raid. I would rather set up accounts and access separately for each person. That way, I know who did all that damage. In the end with a little extra work, I feel more secure by using Authenticated Users.


If this helps.
step 1 create non-microsoft account and without email and address without admin rights
step 2 share a drive or folder to specific user account (if Everyone is listed, remove it)
step 3 set security > add Authenticated Users (if more than 1 account) or add specific users
step 3a remove Everyone from list
step 3b uncheck full control and write for all items listed except SYSTEM and Admin account.
step 4 right click Start > Computer Management > System Tools > Shared Folders > Shares ... to verify settings and change anything else. You can also see the number of connections to each share here.