"The TeamViewer service could not be started"...

Same happened to me. I also have Windows 10 (Home), and I've tried both TV11 and TV12, always with same results, with any application or TV edition (Full, QS, Host).
In the Event Viewer I could see the following:

Faulting application name: TeamViewer.exe, version: 12.0.5541.0, time stamp: 0x583318bc
Faulting module name: ntdll.dll, version: 10.0.14393.447, time stamp: 0x5819be95
Exception code: 0xc0000005
Fault offset: 0x00026d99
Faulting process id: 0x3910
Faulting application start time: 0x01d245819394cf4f
Faulting application path: C:\Program Files (x86)\TeamViewer\TeamViewer.exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report Id: 985295b1-234c-43c9-b698-fb1d43f78643
Faulting package full name:
Faulting package-relative application ID:

or

Fault bucket , type 0
Event Name: APPCRASH
Response: Not available
Cab Id: 0

Problem signature:
P1: TeamViewer.exe
P2: 12.0.5541.0
P3: 583318bc
P4: ntdll.dll
P5: 10.0.14393.447
P6: 5819be95
P7: c0000005
P8: 00026d99
P9:
P10:

Attached files:
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER6DE.tmp.WERInternalMetadata.xml
\\?\C:\Users\MarianoL\AppData\Local\Temp\WER77B.tmp.appcompat.txt
C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_TeamViewer.exe_217e5421fd730334d5e92d22a3c74480a3464f_85c32d84_cab_2cb40846\memory.hdmp
C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_TeamViewer.exe_217e5421fd730334d5e92d22a3c74480a3464f_85c32d84_cab_2cb40846\triagedump.dmp
WERGenerationLog.txt

These files may be available here:
C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_TeamViewer.exe_217e5421fd730334d5e92d22a3c74480a3464f_85c32d84_cab_2cb40846

Analysis symbol:
Rechecking for solution: 0
Report Id: 985295b1-234c-43c9-b698-fb1d43f78643
Report Status: 100
Hashed bucket:

Finally, I was able to connect remotely using Web Client of TV Manager.

I'm not able to attach logs and/or dump files, or at least I can't see how...

If someone can help us (me and Chris, at least), and needs more info, please, let me know.

Best regards, in advance.

 

MarianoL

 

This is from another thread in another forum, but here is where you might want to start... Number 7 is one I'd look at close.

Cause of Ntdll.dll Errors

The causes of ntdll.dll error messages can vary greatly. However, most ntdll.dll errors result from a corrupt or damaged version of the ntdll.dll file itself, corrupt hardware drivers, or issues between Windows and other programs. Ntdll.dll errors can sometimes mean that a piece of hardware in your computer is malfunctioning, but this is rare.
How To Fix Ntdll.dll Errors

1. Restart your computer. The ntdll.dll error you're receiving could be due to a one-time, temporary issue and a simple reboot may resolve the problem completely.
2. Reinstall the program if the ntdll.dll error only displays when you use a specific program.
   
   If the software program has any updates or service packs available, install them too. The software's programmers may have identified an issue with the program that caused the ntdll.dll error and then issued a patch for it.
   
   Note: Third party software programs that have been installed on your computer are almost always the cause of ntdll.dll errors. The remainder of these troubleshooting steps resolve ntdll.dll issues only rarely.
3. Check the Windows service pack level you're running and then check Microsoft's support site to see if there is a more recent service pack available for installation. Some issues that caused ntdll.dll errors have been corrected in these service packs from Microsoft.
4. Selectively disable Internet Explorer add-ons. If your ntdll.dll error is displaying when you start, run, or close Internet Explorer, an add-on may be causing the problem. Disabling each add-on, one by one, will determine which add-on is the culprit (if any).
   
   Note: As a workaround, assuming the ntdll.dll error really is Internet Explorer related, install and use a competing browser like Firefox.
5. Rename the NLSPATH system variable. If your Windows system does not have this environment variable, skip this step.
   
   Note: This is a troubleshooting step for this issue only. Be sure to set this path back to its original name if this does not resolve the ntdll.dll issue.
6. Disable Data Execution Prevention for Explorer.exe. As in the previous step, this is for troubleshooting the ntdll.dll issue only. If this doesn't resolve the problem, return the Data Execution Prevention settings to their previous settings.
7. Update drivers for any hardware in your computer where updated drivers are available. Outdated drivers sometimes cause ntdll.dll errors.
8. Test your memory for damage. If you're receiving ntdll.dll messages, one possible cause could be a bad memory module in your system. Testing your memory will either identify a problem or clear your RAM of any responsibility.

I also encounter this! hope we have response from teamviewer support

I have tried everything - nothing works. So I am downgrading to 12. This means that connecting to other computers will be a problem because TV will NOT let me connect to later versions. That "upgrade or NO connect" policy is an inhibitor.