Announcements

TeamViewer 14.5 has been released. See the Change Logs here.

Posted by CarlosC
Digon

Re: Black screen not working (Windows 10)

Hi PaulB,

We had tried to install TV on "fresh" - new PCs only with W10 connected directly to the ISP router without sucess.

We have several customers with SOPHOS UTM, and we found no difference between them and other customers who don't have UTMs.

In fact all installations made since August/September 2017 are not able to show black screen - however in the same customers PCs who have installations made before that can still show black screen.

Carlos

Posted by H1nks
Henagon

Re: Black screen not working (Windows 10)

Has anyone found a solution for this?

We are using Windows 10 Version 1607 (LTSB) and blanking does'nt work properly. It blanks for a few seconds and then reverts.

Posted by CarlosC
Digon

Re: Black screen not working (Windows 10)

Current version is 14.1.3399 and Teamviewer didn't solve this issue yet. I had opened several suport cases - and I think they simply don't care.
They keep adding more "features" - but the basic does not work.

 

 

Posted by tAp
Trigon

Re: Black screen not working (Windows 10)

There is a solution that required action by TeamViewer

The 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)" 

This is just lazyness. Can be fixed by TV updating or issuing an new code signing certificate.

Posted by RCT_IT
Trigon

Re: Black screen not working (Windows 10)

TV please fix this, we shouldnt have to revert back to an old GPU driver?

Where upto 4.16 for crying out loud?

Posted by Moderator Moderator
Moderator

Re: Black screen not working (Windows 10)

Hi there, 

Thanks for your posts. Please find additional information here: How to turn the remote screen black

Not all monitors, video cards, motherboards, or BIOS support the TeamViewer monitor driver solution, which is required to use the black screen.

For further questions, please do not hesitate to contact us again. 

All the best :) 
Natascha

Posted by tAp
Trigon

Re: Black screen not working (Windows 10)

Natascha,

The problem has nothing to do with all monitors, video cards, motherboards, or BIOS support

The solution requires action by TeamViewer.

The 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 Digital Signature Details, then click View Certificate of the signer, and you will see that it is code signed by "TeamViewer GmbH" whose certificate expired on 3/3/2018.

That is why in device manager, the device properties 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)" 

This can only be fixed by TeamViewer updating or issuing a new a new signed driver signed by a valid code signer.

Posted by CarlosC
Digon

Re: Black screen not working (Windows 10)

And this is also causing a issue with some laptops:

After installing TV (and not be able to install the TV screen driver) the user is not able to use the FN+Fx keys combination to increase/decrease the brightness, volume, etc.

The "workaround" requires:
1. removing the (not working) screen driver in device manager;
2. search for update drivers for monitor - with luck windows update will find and install updated drivers and the use will be alble to use FN+TX keys.

TV is completelly missing the point on this: adding more "features" on their product and completelly forget to fix all this issues.

 

Posted by RCT_IT
Trigon

Re: Black screen not working (Windows 10)

Hi tAp,

Do you think this will work for the driver?

[The URL link has been removed.]


Thanks

Posted by tAp
Trigon

Re: Black screen not working (Windows 10)

I think it will work.

The instructions are for "How to Sign an Unsigned Driver for x64 Windows 10, 8.1 or 7 with a Self-signed Certificate", but the driver is already digitally signed. 

Please try and let us know.  

Posted by BlackScreen
Digon

Re: Black screen not working (Windows 10)

still not working....bah

Posted by Barbara04
Neutron

Re: Black screen not working (Windows 10)

Which one did u use for it now?
Posted by RCT_IT
Trigon

Re: Black screen not working (Windows 10)

theres still no fix man..... even on the latest version of TV 14.4.2669

Driver: TVMonitor.sys

Date Modified: ‎Wednesday, ‎8 ‎August ‎2018, ‏‎5:31:20 PM


@Barbara04 wrote:
Which one did u use for it now?

 

Posted by syslink
Digon

Re: Black screen not working (Windows 10)

I confirm, no changes even in Windows 7.
Posted by Tomvalenz
Electron

Re: Black screen not working (Windows 10)


@Natascha wrote:

Hi there, 

Thanks for your posts. Please find additional information here: How to turn the remote screen black

Not all monitors, video cards, motherboards, or BIOS support the TeamViewer monitor driver solution, which is required to use the black screen.

For further questions, please do not hesitate to contact us again. 

All the best :) 
Natascha


@Natascha Have you read anything in this thread? Your reply is a slap in the face to all inquiring here. You point people to a KB article? Your driver/certificate expired a year ago, and people have been waiting +1 year for a fix/new driver? Do you even know? Have you done a fresh install?? What OS are you using that the driver installs on??? Can you please provide an update/solution?

Thank you.