Hi, I had the same problem as you with the Windows Server 2019 regarding the I2C touchpad.
YOU DO NOT NEED TO DISABLE SIGNING! This is for Synaptic device!
It seems that Windows "forgot" to install hidi2c.sys service. You will have to do this manually:
Find hidi2c.sys on the Win2019 installation media in boot.wim (should be in windows\system32\drivers, use 7zip to open wim).
Copy that file to c:\windows\system32\drivers.
The inf file is already present at c:\windows\inf (Windows server 2019 does not allow INF installation for this I2C device)
Then you need to manually install the driver in Registry.
Download PSEXEC, extract it to System32.
Open a CMD as administrator and type: psexec -s -i cmd.exe
You are NOW NT Authority, you can modify sensitive areas in Registry.
Backup the registry if you want.
Save the following 4 registy configs as files.
Import the following 4 reg files into the registry with command: reg import file.reg (as NT Authority)
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Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hidi2c]
"ImagePath"=hex(2):5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\
74,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,64,00,72,\
00,69,00,76,00,65,00,72,00,73,00,5c,00,68,00,69,00,64,00,69,00,32,00,63,00,\
2e,00,73,00,79,00,73,00,00,00
"Type"=dword:00000001
"Start"=dword:00000003
"ErrorControl"=dword:00000001
"Group"="Extended Base"
"Tag"=dword:00000018
"DisplayName"="@hidi2c.inf,%hidi2c.SVCDESC%;Microsoft I2C HID Miniport Driver"
"Owners"=hex(7):68,00,69,00,64,00,69,00,32,00,63,00,2e,00,69,00,6e,00,66,00,00,\
00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hidi2c\Parameters]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hidi2c\Parameters\Wdf]
"WdfMajorVersion"=dword:00000001
"WdfMinorVersion"=dword:0000000f
"TimeOfLastTelemetryLog"=hex(b):12,a4,41,70,4b,d0,d7,01
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hidi2c\Enum]
"0"="ACPI\\SYNA2B37\\4&324c8b67&0"
"Count"=dword:00000001
"NextInstance"=dword:00000001
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Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{745a17a0-74d3-11d0-b6fe-00a0c90f57da}]
"Class"="HIDClass"
"ClassDesc"="@%SystemRoot%\\System32\\hid.dll,-101"
"IconPath"=hex(7):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\
74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,\
00,65,00,74,00,75,00,70,00,61,00,70,00,69,00,2e,00,64,00,6c,00,6c,00,2c,00,\
2d,00,32,00,34,00,00,00,00,00
"NoInstallClass"="1"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{745a17a0-74d3-11d0-b6fe-00a0c90f57da}\0000]
"DriverDesc"="I2C HID Device"
"ProviderName"="Microsoft"
"DriverDateData"=hex:00,80,8c,a3,c5,94,c6,01
"DriverDate"="6-21-2006"
"DriverVersion"="10.0.17763.1"
"InfPath"="hidi2c.inf"
"InfSection"="hidi2c_Device.NT"
"IncludedInfs"=hex(7):70,00,63,00,69,00,2e,00,69,00,6e,00,66,00,00,00,00,00
"MatchingDeviceId"="ACPI\\PNP0C50"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{745a17a0-74d3-11d0-b6fe-00a0c90f57da}\0001]
"DriverDesc"="HID-compliant vendor-defined device"
"ProviderName"="Microsoft"
"DriverDateData"=hex:00,80,8c,a3,c5,94,c6,01
"DriverDate"="6-21-2006"
"DriverVersion"="10.0.17763.719"
"InfPath"="input.inf"
"InfSection"="HID_Raw_Inst.NT"
"MatchingDeviceId"="HID_DEVICE_UPR:FF00-FFFF"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{745a17a0-74d3-11d0-b6fe-00a0c90f57da}\Properties]
"Security"=hex:01,00,04,90,00,00,00,00,00,00,00,00,00,00,00,00,14,00,00,00,02,\
00,5c,00,04,00,00,00,00,00,14,00,00,00,00,10,01,01,00,00,00,00,00,05,12,00,\
00,00,00,00,18,00,00,00,00,10,01,02,00,00,00,00,00,05,20,00,00,00,20,02,00,\
00,00,00,14,00,00,00,00,e0,01,01,00,00,00,00,00,01,00,00,00,00,00,00,14,00,\
00,00,00,a0,01,01,00,00,00,00,00,05,0c,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{745a17a0-74d3-11d0-b6fe-00a0c90f57da}\Properties\{6a3433f4-5626-40e8-a9b9-dbd9ecd2884b}]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{745a17a0-74d3-11d0-b6fe-00a0c90f57da}\Properties\{6a3433f4-5626-40e8-a9b9-dbd9ecd2884b}\0003]
@=hex(ffff0011):ff
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{745a17a0-74d3-11d0-b6fe-00a0c90f57da}\Properties\{6a3433f4-5626-40e8-a9b9-dbd9ecd2884b}\0006]
@=hex(ffff0011):ff
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Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0]
"Capabilities"=dword:00000020
"ContainerID"="{00000000-0000-0000-ffff-ffffffffffff}"
"HardwareID"=hex(7):41,00,43,00,50,00,49,00,5c,00,56,00,45,00,4e,00,5f,00,53,\
00,59,00,4e,00,41,00,26,00,44,00,45,00,56,00,5f,00,32,00,42,00,33,00,37,00,\
00,00,41,00,43,00,50,00,49,00,5c,00,53,00,59,00,4e,00,41,00,32,00,42,00,33,\
00,37,00,00,00,2a,00,53,00,59,00,4e,00,41,00,32,00,42,00,33,00,37,00,00,00,\
00,00
"CompatibleIDs"=hex(7):41,00,43,00,50,00,49,00,5c,00,50,00,4e,00,50,00,30,00,\
43,00,35,00,30,00,00,00,50,00,4e,00,50,00,30,00,43,00,35,00,30,00,00,00,00,\
00
"ClassGUID"="{745a17a0-74d3-11d0-b6fe-00a0c90f57da}"
"Service"="hidi2c"
"UpperFilters"=hex(7):6d,00,73,00,68,00,69,00,64,00,6b,00,6d,00,64,00,66,00,00,\
00,00,00
"DeviceDesc"="@hidi2c.inf,%hidi2c.devicedesc%;I2C HID Device"
"Driver"="{745a17a0-74d3-11d0-b6fe-00a0c90f57da}\\0000"
"Mfg"="@hidi2c.inf,%msft%;Microsoft"
"ConfigFlags"=dword:00000000
"ParentIdPrefix"="5&9722fa9&0"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Device Parameters]
"EnhancedPowerManagementEnabled"=dword:00000001
"DeviceResetNotificationEnabled"=dword:00000001
"LegacyTouchScaling"=dword:00000000
"FirmwareIdentified"=dword:00000001
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Device Parameters\e5b3b5ac-9725-4f78-963f-03dfb1d828c7]
"D3ColdSupported"=dword:00000001
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Device Parameters\Interrupt Management]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Device Parameters\Interrupt Management\Affinity Policy]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Device Parameters\Interrupt Management\Affinity Policy - Temporal]
"TargetGroup"=dword:00000000
"TargetSet"=hex(b):01,00,00,00,00,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\LogConf]
"BasicConfigVector"=hex(a):68,00,00,00,0f,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,01,00,00,00,01,00,01,00,02,00,00,00,00,84,\
00,00,00,00,00,00,02,01,00,00,01,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,02,01,00,10,00,00,00,00,04,00,00,00,04,00,00,02,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00
"BootConfig"=hex(8):01,00,00,00,0f,00,00,00,00,00,00,00,01,00,01,00,02,00,00,\
00,84,00,00,00,02,01,00,00,01,00,00,00,00,00,00,00,00,00,00,00,02,01,10,00,\
00,04,00,00,00,04,00,00,ff,ff,ff,ff,00,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{540b947e-8b40-45bc-a8a2-6a0b894cbda2}]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{540b947e-8b40-45bc-a8a2-6a0b894cbda2}\0007]
@=hex(ffff0012):68,00,69,00,64,00,69,00,32,00,63,00,2e,00,69,00,6e,00,66,00,3a,\
00,41,00,43,00,50,00,49,00,5c,00,50,00,4e,00,50,00,30,00,43,00,35,00,30,00,\
2c,00,68,00,69,00,64,00,69,00,32,00,63,00,5f,00,44,00,65,00,76,00,69,00,63,\
00,65,00,2e,00,4e,00,54,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{540b947e-8b40-45bc-a8a2-6a0b894cbda2}\000A]
@=hex(ffff0012):5c,00,5f,00,53,00,42,00,2e,00,50,00,43,00,49,00,30,00,2e,00,49,\
00,32,00,43,00,34,00,2e,00,54,00,50,00,44,00,30,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{80497100-8c73-48b9-aad9-ce387e19c56e}]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{80497100-8c73-48b9-aad9-ce387e19c56e}\0006]
@=hex(ffff0007):00,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{83da6326-97a6-4088-9453-a1923f573b29}]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{83da6326-97a6-4088-9453-a1923f573b29}\0003]
@=hex(ffff0012):68,00,69,00,64,00,69,00,32,00,63,00,2e,00,69,00,6e,00,66,00,3a,\
00,64,00,62,00,30,00,34,00,61,00,31,00,36,00,63,00,62,00,35,00,31,00,37,00,\
32,00,64,00,30,00,63,00,3a,00,68,00,69,00,64,00,69,00,32,00,63,00,5f,00,44,\
00,65,00,76,00,69,00,63,00,65,00,2e,00,4e,00,54,00,3a,00,31,00,30,00,2e,00,\
30,00,2e,00,31,00,37,00,37,00,36,00,33,00,2e,00,31,00,3a,00,41,00,43,00,50,\
00,49,00,5c,00,50,00,4e,00,50,00,30,00,43,00,35,00,30,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{83da6326-97a6-4088-9453-a1923f573b29}\000A]
@=hex(ffff0012):50,00,43,00,49,00,5c,00,56,00,45,00,4e,00,5f,00,38,00,30,00,38,\
00,36,00,26,00,44,00,45,00,56,00,5f,00,35,00,41,00,42,00,34,00,26,00,53,00,\
55,00,42,00,53,00,59,00,53,00,5f,00,33,00,38,00,31,00,33,00,31,00,37,00,41,\
00,41,00,26,00,52,00,45,00,56,00,5f,00,30,00,42,00,5c,00,33,00,26,00,31,00,\
31,00,35,00,38,00,33,00,36,00,35,00,39,00,26,00,30,00,26,00,42,00,38,00,00,\
00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{83da6326-97a6-4088-9453-a1923f573b29}\0012]
@=hex(ffff0007):00,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{83da6326-97a6-4088-9453-a1923f573b29}\0064]
@=hex(ffff0010):7c,fe,df,5e,51,d0,d7,01
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{83da6326-97a6-4088-9453-a1923f573b29}\0065]
@=hex(ffff0010):7c,fe,df,5e,51,d0,d7,01
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{83da6326-97a6-4088-9453-a1923f573b29}\0066]
@=hex(ffff0010):7c,fe,df,5e,51,d0,d7,01
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a45c254e-df1c-4efd-8020-67d146a850e0}]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a45c254e-df1c-4efd-8020-67d146a850e0}\0025]
@=hex(ffff2012):41,00,43,00,50,00,49,00,28,00,5f,00,53,00,42,00,5f,00,29,00,23,\
00,41,00,43,00,50,00,49,00,28,00,50,00,43,00,49,00,30,00,29,00,23,00,41,00,\
43,00,50,00,49,00,28,00,49,00,32,00,43,00,34,00,29,00,23,00,41,00,43,00,50,\
00,49,00,28,00,54,00,50,00,44,00,30,00,29,00,00,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a8b865dd-2e3d-4094-ad97-e593a70c75d6}]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a8b865dd-2e3d-4094-ad97-e593a70c75d6}\0002]
@=hex(ffff0010):00,80,8c,a3,c5,94,c6,01
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a8b865dd-2e3d-4094-ad97-e593a70c75d6}\0003]
@=hex(ffff0012):31,00,30,00,2e,00,30,00,2e,00,31,00,37,00,37,00,36,00,33,00,2e,\
00,31,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a8b865dd-2e3d-4094-ad97-e593a70c75d6}\0004]
@=hex(ffff0012):49,00,32,00,43,00,20,00,48,00,49,00,44,00,20,00,44,00,65,00,76,\
00,69,00,63,00,65,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a8b865dd-2e3d-4094-ad97-e593a70c75d6}\0005]
@=hex(ffff0012):68,00,69,00,64,00,69,00,32,00,63,00,2e,00,69,00,6e,00,66,00,00,\
00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a8b865dd-2e3d-4094-ad97-e593a70c75d6}\0006]
@=hex(ffff0012):68,00,69,00,64,00,69,00,32,00,63,00,5f,00,44,00,65,00,76,00,69,\
00,63,00,65,00,2e,00,4e,00,54,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a8b865dd-2e3d-4094-ad97-e593a70c75d6}\0008]
@=hex(ffff0012):41,00,43,00,50,00,49,00,5c,00,50,00,4e,00,50,00,30,00,43,00,35,\
00,30,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a8b865dd-2e3d-4094-ad97-e593a70c75d6}\0009]
@=hex(ffff0012):4d,00,69,00,63,00,72,00,6f,00,73,00,6f,00,66,00,74,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a8b865dd-2e3d-4094-ad97-e593a70c75d6}\000E]
@=hex(ffff0007):00,20,ff,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{a8b865dd-2e3d-4094-ad97-e593a70c75d6}\0010]
@=hex(ffff2012):70,00,63,00,69,00,2e,00,69,00,6e,00,66,00,00,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{f0e20f09-d97a-49a9-8046-bb6e22e6bb2e}]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Properties\{f0e20f09-d97a-49a9-8046-bb6e22e6bb2e}\0002]
@=hex(ffff1003):01,00,00,00,00,00,00,00,00,00,00,00,b0,01,00,00,09,00,00,00,02,\
00,00,00,00,00,00,00,00,00,00,00,01,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,04,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\SYNA2B37\4&324c8b67&0\Control]
"FilteredConfigVector"=hex(a):d0,00,00,00,0f,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,02,00,00,00,01,00,01,00,03,00,00,00,01,\
80,03,00,00,00,00,00,01,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,84,00,00,00,00,00,00,02,01,00,00,01,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,01,02,01,80,10,00,00,00,00,04,00,00,\
00,04,00,00,02,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,01,00,01,00,02,\
00,00,00,00,84,00,00,00,00,00,00,02,01,00,00,01,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,02,01,00,10,00,00,00,00,04,00,00,00,04,00,\
00,02,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
"AllocConfig"=hex(8):01,00,00,00,0f,00,00,00,00,00,00,00,01,00,01,00,02,00,00,\
00,84,00,00,00,02,01,00,00,01,00,00,00,00,00,00,00,00,00,00,00,02,01,10,00,\
00,04,00,00,00,04,00,00,ff,ff,ff,ff,00,00,00,00
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Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EventLog\System\hidi2c]
"EventMessageFile"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,\
00,6f,00,74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,\
5c,00,49,00,6f,00,4c,00,6f,00,67,00,4d,00,73,00,67,00,2e,00,64,00,6c,00,6c,\
00,3b,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,\
25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,44,00,72,\
00,69,00,76,00,65,00,72,00,73,00,5c,00,68,00,69,00,64,00,69,00,32,00,63,00,\
2e,00,73,00,79,00,73,00,00,00
"TypesSupported"=dword:00000007
Reboot your computer and the i2c touchpad should work. This procedure worked for me.
The registry configuration was taken from Windows 10 PE.