Operational Defect Database
BugZero found this defect 1872 days ago.
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WatchGuard Technologies | kA10H000000g3SySAI
Remote Desktop sessions over Mobile VPN with SSL lag or fail in Windows 10 version 1809
Last update date:
4/4/2019
Affected products:
Firebox M200
Firebox M300
Firebox M270
Firebox M370
Firebox M470
Firebox M570
Firebox M670
Firebox M290
Firebox M390
Firebox M400
Firebox M500
Firebox M440
Affected releases:
All
Fireware
12.x
12.0.x
12.1.x
12.1
12.1.1
12.1.3
12.10.x
12.2.x
12.3.x
12.4.x
Fixed releases:
All
Description:
Issue
After you log in to a remote system with RDP (Remote Desktop Protocol) over Mobile VPN with SSL from a Windows 10 version 1809 system, the connection might lag badly, or fail with a black screen. This occurs because Windows 10 version 1809 uses UDP packets for RDP session data. Through a Mobile VPN with SSL connection, the UDP packets can arrive out of order.
Workaround/Solution
To avoid this issue, follow these steps to disable UDP transport for Remote Desktop on the client system: 1. In the Windows Search bar, type gpedit.msc and press Enter. 2. In the Local Group Policy Editor, navigate to Computer Configuration > Administrative Template > Windows Components > Remote Desktop Services > Remote Desktop Connection Client. 3. Double-click Turn Off UDP On Client. 4. Select Enabled. 5. Click OK and close the Local Group Policy Editor. 6. In the Windows Search bar, type gpupdate /force and press Enter.
