I can't install monitor driver in advanced settings.
"The monitor driver installition has failed"
What is the problem?
TV14 / Windows 10 / 1809 Update
Thanks for help.
Thank you for your post.
Can you please try to install the driver manually via the local Device Manager?
For further information regarding the monitor driver, please look at the following Knowledge Base article: How to turn the remote screen black
If you have any further questions, please do not hesitate to contact us again :)
German Community Moderator
Unfortunately I already tried this methods :smileysad: but the "Monitor driver installition has failed" and I can't find the TVMonitor.sys file in windows folder.
Thank you for your answer.
As described in the mentioned Knowledge Base article:
"Not all monitors, video cards, motherboards, or BIOS support the TeamViewer monitor driver solution, which is required to use the black screen. The TeamViewer monitor driver solution is dependent on the implementation of hardware vendors and in case of incompatibility, you may not be able to use this feature with some host computers."
Could be possible, that this is the reason in your case.
I'm really sorry for the circumstances. :(
German Community Moderator
Can you please provide instructions on how to install the driver manually in Device Manager? Where do we get the files?
I found the files in "C:\Program Files (x86)\TeamViewer\x64" but the digital signature expired 2018-03-03. That's why it won't install. Can we download the files with a valid signature from somewhere?
I solved the trouble.
You need reboot OS without checking signing drivers.
Unfortunately, your solution only works until the next reboot. You would have to do that complicated restart every time, and if you have bitlocker enabled, you have to enter the recovery key every time too.
Why doesn't TV just properly sign the driver?
The Teamviewer monitor driver has an invalid expired signature which prevents successful installation in windows 10.
When can we expect patch/fix from TeamViewer so this driver is properly signed with working certificate?
So over the weekend, this issue has now surfaced for me as well.
For some reason, I am no longer able to see dual screens over TeamViewer, or black out the screens on the other end.
The agent is unable to install the monitor driver, either locally from the advanced options, or remotely, when selecting to blackout the screen...
way to NOT help out TV support. Congrats on sluffing off and blaming it on "hardware".
Face it something has changed and your software is no longer working correctly.
There is a solution that requires action by TeamViewer. Sign the TV Monitor Driver file with a valid code signing certificate.
The TV Monitor Driver needed for Black Screen the is this file - c:\windows\system32\drivers\TVMonitor.sys.
If you look at the properties of that file, then the Digitial Signature Details, then click View Certificate of the signer, and you will see that it is code signed by "TeamViewer GmbH" who's certificate expired 3/3/2018.
That is why in device manager, the device says "Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)"
There is an updated "TeamViewer GmbH" code signing certificate that is already being used to sign the rest of the drivers, DLLs, and executables. This driver file for some reason was left out and not resigned with the new certificate.
This can only be fixed by TV properly signing thier TVMonitor.sys driver file, like they do the rest of the drivers, executables, and DLLs, with their own new code signing certificate.