can not RDP to remote 2012R2 server

Hi experts,

I meet a problem when i remote to 2012r2 server, it occur after i insatll all the latest update by Windows update,  i can enter my credential, but after found it can not logon, the origional message is "Access Denied“ and nothing else, the same there have a event

Log Name:      Application
Source:        Windows Error Reporting
Date:          2015/3/15 14:30:48
Event ID:      1001
Task Category: None
Level:         Information
Keywords:      Classic
User:          N/A
Computer:      2012r2-02
Description:
Fault bucket , type 0
Event Name: IMECustomerEvent
Response: Not available
Cab Id: 0

Problem signature:
P1: IPX Assertion
P2: 0CHS
P3: ChsIME.exe
P4: 6.3.9600.17031
P5: ChsIME.exe
P6: 6.3.9600.17031
P7: Windows\feime\Modern\IMEexe\common\CImeKeyboardInputProvider.h
P8: 489
P9:
P10:

Attached files:

These files may be available here:
C:\ProgramData\Microsoft\Windows\WER\ReportQueue\NonCritical_IPX Assertion_d4c76cfcf567ba4d2612a3eb3b6bb0345d4d3494_00000000_cab_13dfbf5a

Analysis symbol:
Rechecking for solution: 0
Report Id: d0d335ef-cadc-11e4-813e-68b599ef54b5
Report Status: 4
Hashed bucket:
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Windows Error Reporting" />
    <EventID Qualifiers="0">1001</EventID>
    <Level>4</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-03-15T06:30:48.000000000Z" />
    <EventRecordID>11487</EventRecordID>
    <Channel>Application</Channel>
    <Computer>2012r2-02</Computer>
    <Security />
  </System>
  <EventData>
    <Data>
    </Data>
    <Data>0</Data>
    <Data>IMECustomerEvent</Data>
    <Data>Not available</Data>
    <Data>0</Data>
    <Data>IPX Assertion</Data>
    <Data>0CHS</Data>
    <Data>ChsIME.exe</Data>
    <Data>6.3.9600.17031</Data>
    <Data>ChsIME.exe</Data>
    <Data>6.3.9600.17031</Data>
    <Data>Windows\feime\Modern\IMEexe\common\CImeKeyboardInputProvider.h</Data>
    <Data>489</Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>C:\ProgramData\Microsoft\Windows\WER\ReportQueue\NonCritical_IPX Assertion_d4c76cfcf567ba4d2612a3eb3b6bb0345d4d3494_00000000_cab_13dfbf5a</Data>
    <Data>
    </Data>
    <Data>0</Data>
    <Data>d0d335ef-cadc-11e4-813e-68b599ef54b5</Data>
    <Data>4</Data>
    <Data>
    </Data>
  </EventData>
</Event>

Please any help me, thanks !