One of the most annoying things about Windows 10 is random mouse lag/stutter. To clarify if you move your mouse in a constant circle and it pauses every few seconds this is the fix.
Disable Cortana!
Cortana is constantly recording and sending data to Microsoft, which causes system performance issues. This is most apparent on slower internet connections but can also be seen on all systems based on how much data Cortana is collecting and sending back to Microsoft.
Warning! Incorrectly editing your system registry can cause your system to stop functioning. Follow instructions accurately.
To disabled Cortana do the following:
- "Windows" Key + "R" Key to open the run command
- type in "regedit"
- Navigate to "Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows"
- Right click the "Windows" key folder and choose New > Key
- Name this new key "Windows Search"
- Now Right click the "Windows Search" key folder and choose New > DWORD (32-bit) Value
- Name this "AllowCortana"
- Close the registry editor and restart your computer.
That's it, your done. Mouse lag/stuttering should be fixed.
This can be caused if you've changed your administrative account user to improve security on a server.
In order to resolve this issue you will need to stop the max view services in this order:

Then edit cimserver_planned.conf in your maxview storage manager, default path is:
C:\Program Files\Adaptec\maxView Storage Manager\pegasus\cimserver_planned.conf
open with text editor and alter the line from
enableAuthentication=true
to
enableAuthentication=false
It may look something like this:

save and exit the conf file.
Now start the maxview Storage Manager services in this order:

Now you can login with your admin account correctly.
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.,

Solution #2
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.
The solution:
On the computer you are connecting to...
Open GPEdit

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.
Done.
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
#cd /media
#./install.sh
#reboot
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.
Why:
After the May 2018 update RDP no longer connects by default to a remote system that is not running the CredSSP update.