This can occur with with to many rdp connection attempts, someone may be trying to break into your computer/server.
Check your resource monitor network usage, if you see many connections (10, 20+) with svchost.exe (termsvcs) then someone is attempting to break into the system.
Its best practice to limit RDP connections to specific IP addresses or via a VPN to prevent this. However, in some cases this may not be possible, so you may change the port number which may help mitigate the attack.
WARNING, Incorrectly editing your registry can cause your system to become non functional. Proceed at your own risk.
open regedit, and go to "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp" then select the PortNumber REG_DWORD entry and change the value data in Decimal to the new port number. Restart the service or system to make the change active.,
It can also be cause when a windows servers is running on vmware or hyper-v and in some cases with a stand alone server where hardware has changed. In most cases this error starts after virtual machine resource changes, or some windows updates.
On the computer you are connecting to...
Then go to Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Security
Then choose Require use of specific security layer for remote (RDP) connections
Enable > then choose Security Layer: RDP
Reboot the system.
note: I am not actually sure of the actual cause of this error, if someone has some details please share them below.
After you install your Linux OS from the Microsoft HyperV terminal access do the following:
- Click "Media", "DVD Drive" > "Insert Disk..."
- Choose LinuxIC-4.2.5.iso
- Login to the server and do the following:
#mount /dev/cdrom /media
mount: /dev/sr0 is write-protected, mounting read-only
After doing this you will be able to setup networking and use kvm via HyperV on linux.
So you go to login to via RDP to a server, workstation or remote PC and you get this error:
Not to worry, here is the fix as well as the why.
First run windows update on your local system and try again.
Quick fix: (not secure)
- Use the Windows+R key to open the Run Command. (If you keyboard lacks the windows key you can use Ctrl+Alt+DEL, open task manager, then click file and "Run".)
- In the run command type in gpedit.msc which will open the Local Group Policy Editor.
- Expand Computer Configuration > Administrative Templates > System > Credentials Delegation.
- Update the Encryption Oracle Remediation policy to Enabled, then change Protection level to Vulnerable.
- After doing this it is advisable to update your remote system and switch these settings back.
Proper fix: (secure)
Update the remote server, in some cases the remote server may show that is it up to date in which case you may have a compromised system and will need to follow the following steps in order to force the update after which you should do a full scan on the system for potential malware.
After the May 2018 update RDP no longer connects by default to a remote system that is not running the CredSSP update.
You've just received notice that your Active Directory server is being used as part of a wide scale dDoS attack. Here is how you can fix it.
Go to the firewall settings on the active directory server or reported server IP and look for the following rules.
- Active Directory Domain Controller - LDAP (TCP-In)
- Active Directory Domain Controller - LDAP (UDP-In)
- Active Directory Domain Controller - LDAP for Global Catalog (TCP-In)
- Active Directory Domain Controller - Secure LDAP (TCP-In)
- Active Directory Domain Controller - Secure LDAP for Global Catalog (TCP-In)
For each of these alter the rule by choosing the Scope tab and entering only IP addresses that should have access to LDAP information. For example, Microsoft Exchange Servers within your network that need access to LDAP.
For assistance securing your network or if you are looking for hosted exchange services check out Area51.mn.
This error appears in the event viewer when the scheduled task "ScheduledDefrag" runs.
Cause: In most cases this is cause by the -k switch which tells the defrager to perform a slab consolidation on the selected volume. This will cause an error for slabs that are less than 8 MB, and will commonly toss an error on HyperV VM's.
Solution: remove the -k switch from the task.
- Open scheduled tasks, Microsoft, windows, defrag: "ScheduledDefrag"
- Now click properties, actions, edit [start a program]
- under add arguments(optional): remove the -k and click "ok", "ok"
That's it, your done.