i got SAME ISSUE MY DVR HAS BEEN DOWN FOR MONTHS DAMN IT
would need logs with debug logging not disabled - logs captured after the failure
see my earlier post in this thread
Plex Media Server Logs_2021-04-13_20-38-25.zip (4.6 MB)
no live tv or dvr anymore
The Plex Tuner Service is failing to launch getting an Access Denied error
Win32 Error: 5 Access is denied.
Apr 13, 2021 20:30:25.877 [8632] DEBUG - [ChildProcessMonitor] Plex Tuner Service.exe starting.
Apr 13, 2021 20:30:25.877 [8632] DEBUG - [ChildProcessMonitor/JobRunner] Job running: "C:\Program Files (x86)\Plex\Plex Media Server\Plex Tuner Service.exe" "C:\Program Files (x86)\Plex\Plex Media Server\Resources\Tuner\Private" "C:\Program Files (x86)\Plex\Plex Media Server\Resources\Tuner\Shared" 1.22.2.4282-a97b03fad 32600
Apr 13, 2021 20:30:25.878 [8632] ERROR - [ChildProcessMonitor/JobRunner] exec of C:\Program Files (x86)\Plex\Plex Media Server\Plex Tuner Service.exe failed: error
Apr 13, 2021 20:30:25.878 [8632] ERROR - [ChildProcessMonitor/JobRunner] Win32 Error: 5 Access is denied.
Apr 13, 2021 20:30:25.878 [8632] DEBUG - [ChildProcessMonitor/JobRunner] Jobs: Starting child process with pid 0
Apr 13, 2021 20:30:25.878 [8632] ERROR - [ChildProcessMonitor] Plex Tuner Service.exe failed to start
Is this a Windows Server OS ? Or Windows 10?
You can try a repair through Add or Remove programs
You can also try uninstalling Plex Media Server through Add or Remove Programs and then get a fresh download from plex.tv/downloads and install - but please double check that there are no Plex processes running (other than the Plex Update Service.exe) when checking Windows Task Manager
If that does not help - would need then to get PML log file (by running SysInternals Process Monitor) when launching Plex Media Server
It’s windows server 2019 OS
I will work on the further troubleshooting steps today. Thanks
If not obvious - suggest using Process Monitor - Windows Sysinternals | Microsoft Docs
I will
Have to look into why and how to get around that. I did try uninstalling and re-installing plex and it didn’t fix the issue.
I have found the fix for this issue, at least regarding Hauppauge tuners I’ve tried, in case anyone following this thread is still suffering.
And the fix would be…?
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While doing your channels scan, you’ll see something like HTTP GET /device/…/scanners in your debug log
If you open that URL In your browser, you can find a reference to an .ini file corresponding to the channel package you are trying to scan.
This .ini file can then be found in:
\Plex\Plex Media Server\Resources\Tuner\Shared\scanners\dvbc[or what type of tuner you have]\transponders
or on linux:
./usr/lib/plexmediaserver/Resources/Tuner/Shared/scanners/dvbc/transponders/
When you open up said ini file, you can then enter the frequency, QAM modulation information etc.
After editing this file (or in my case, I created another file for a missing provider for my country), you should simply be able to then select the newly created (or edited) channel scan, and it should perform the scan using the newly edited parameters.
For me this provided me with 14 channels found → 160 channels found.
Same error here as well. Works directly after restart,. shortly after no more with error: “Could not tune channel. Please check your tuner or antenna.”
Been like this for a year now. no fix in sight 
The “Win32 Error: 5 Access is denied.” error appears to be a new issue when launching Plex via a scheduled task. I had a workaround that checked if the tuner service was running and restarted plex if it was not. It was working well, as a workaround, until this issue started. If I start plex manually or via script it works fine but I get this error any time I start Plex via a scheduled task.
Now I have no way to ensure the tuner service is running.
PLEX DEVs PLEASE FIX THE TUNER SERVICE!!!
Anyone tried the new version? Any better results, or same issues? Looks like a bit of an overhaul…
We’ve rebuilt the DVR setup flow to make it easier and simpler than ever. We now support multiple lineups (and/or countries, across one or multiple tuners) giving you easy access to whatever over-the-air signals your antennas pick up, all in one guide.
interesting… my issue was that “scan channels” was doing nothing, just sitting there laughing at me.
opened the “transponders” folder and there were many different .ini files. I moved all but 1 out and it now appeared to actually scan (although not find anything).
This:
[SATTYPE]
1=4000
2=DVB-T/T2 Europe
[DVB]
0=174
1=177333,7
2=177500,7
3=177667,7
currently means nothing to me. Do you have any info on what is needed in this file please. I am UK based and would be using the Sutton Colfield transmitter for DVT/DVT-2 broadcasts
OK, after a bit of playing…
so the .ini files contain all the different countries frequencies etc, but it only worked for me with 4000.ini in there (no other .ini files, i moved them into a backup folder) which was the whole of Europe (which included my local frequencies). I started this, it got so far through and stopped by giving me an error.
I tried with just me local frequency file (4634.ini), but this didn’t appear to scan.
I copied the contents of my local into the 4000.ini and managed to set it going, it then worked perfectly and I was able to download the guide, match the channels and start watching TV.
Hopefully this helps somebody, the total contents of my 4000.ini file are as follows: (yes i had to remove the 0= also)
[SATTYPE]
1=4000
2=DVB-T/T2 Europe
[DVB]
1=649833,8
2=650000,8
3=650167,8
4=673833,8
5=674000,8
6=674167,8
7=617833,8
8=618000,8
9=618167,8
10=641833,8
11=642000,8
12=642167,8
13=665833,8
14=666000,8
15=666167,8
16=569833,8
17=570000,8
18=570167,8
19=585833,8
20=586000,8
21=586167,8
22=625833,8
23=626000,8
24=626167,8
I have the same problem. I get the “Could not tune channel. Please check your tuner or antenna” message.
When I restart the Plex server, everything works good for some time (sometimes even days) before it happens again.
I am using the Hauppauge WinTV-quadHD tuner.
Just now tried to install the latest drivers from Hauppauge, will report back if it fixed anything.
It is next day and I am still encountering the same issue, even with the new TV card drivers.
Console reads this while loading the channel:
Jul 19, 2021 12:18:50.526 [9012] Error — Error issuing curl_easy_perform(handle): 7
Jul 19, 2021 12:18:50.526 [9012] Warning — HTTP error requesting GET http://192.168.1.1:1990/1cd5fef2-be31-41de-a797-1b4e9c2eda5c/WFADevice.xml (7, Couldn't connect to server) (Failed to connect to 192.168.1.1 port 1990: Connection refused)
Jul 19, 2021 12:18:50.526 [9012] Error — SSDP: Error parsing device schema for http://192.168.1.1:1990/1cd5fef2-be31-41de-a797-1b4e9c2eda5c/WFADevice.xml
Jul 19, 2021 12:19:17.013 [6300] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Unable to find title for item of type 5
Jul 19, 2021 12:19:17.014 [6300] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Unable to find title for item of type 5
Jul 19, 2021 12:19:19.039 [6328] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Error issuing curl_easy_perform(handle): 7
Jul 19, 2021 12:19:19.039 [6328] Warning — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] HTTP error requesting GET http://127.0.0.1:32600/devices/compound_device074dvb%23bda%23pci%23ven_14f1%26dev_8880%26subsys_6b280070%26rev_04%236%26de7faa5%260%26001000e5%23 (7, Couldn't connect to server) (Failed to connect to 127.0.0.1 port 32600: Connection refused)
Jul 19, 2021 12:19:19.039 [6328] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Error parsing content.
Jul 19, 2021 12:19:19.039 [6328] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Error parsing XML: Error parsing file.
Jul 19, 2021 12:19:19.039 [6328] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Grabber: Error obtaining device status.
Jul 19, 2021 12:19:22.726 [4612] Error — [Transcoder] [tcp @ 02b51cc0] Connection to tcp://127.0.0.1:32600 failed: Error number -138 occurred
Jul 19, 2021 12:19:22.730 [4612] Error — [Transcoder] http://127.0.0.1:32600/devices/compound_device074dvb%23bda%23pci%23ven_14f1%26dev_8880%26subsys_6b280070%26rev_04%236%26de7faa5%260%26001000e5%23/media/triplet%3A%2F%2F8395%3A1003%3A13001?param=%3C%3Fxml%20version%3D%221%2E0%22%20encoding%3D%22UTF-8%22%3F%3E%0A%3Ctunedata%3E%3Ctt%3E4%3C%2Ftt%3E%3Cdq%3E0%3C%2Fdq%3E%3Cdr%2F%3E%3Cfr%3E490000%3C%2Ffr%3E%3Cmd%3E0%3C%2Fmd%3E%3Csr%3E0%3C%2Fsr%3E%3Cpl%3E0%3C%2Fpl%3E%3Clf%3E8%3C%2Flf%3E%3Cl1%3E0%3C%2Fl1%3E%3Cl2%3E0%3C%2Fl2%3E%3Cls%3E0%3C%2Fls%3E%3Cpp%3E0%3C%2Fpp%3E%3Chz%3E0%3C%2Fhz%3E%3Cin%3E0%3C%2Fin%3E%3Cfc%3E0%3C%2Ffc%3E%3Ct%3E1003%3C%2Ft%3E%3Cn%3E8395%3C%2Fn%3E%3Cs%3E13001%3C%2Fs%3E%3Cen%3E0%3C%2Fen%3E%3C%2Ftunedata%3E%0A: Unknown error
Jul 19, 2021 12:19:22.749 [6300] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Failed to start session.
Jul 19, 2021 12:19:22.749 [6300] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Recorder: Unable to create transcode session or session failed to start.
Jul 19, 2021 12:19:22.750 [6300] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Recorder: Error 16 (Recording failed. Please check your tuner or antenna.) starting the record, shutting things down.
Jul 19, 2021 12:19:22.750 [7404] Error — Subscription: Rolling media grab failed to start.
Jul 19, 2021 12:19:22.756 [6300] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Starting media grab failed.
Jul 19, 2021 12:19:22.756 [6300] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Unknown metadata type:
Jul 19, 2021 12:19:24.089 [7148] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Error issuing curl_easy_perform(handle): 7
Jul 19, 2021 12:19:24.089 [7148] Warning — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] HTTP error requesting GET http://127.0.0.1:32600/devices/compound_device074dvb%23bda%23pci%23ven_14f1%26dev_8880%26subsys_6b280070%26rev_04%236%26de7faa5%260%26001000e5%23 (7, Couldn't connect to server) (Failed to connect to 127.0.0.1 port 32600: Connection refused)
Jul 19, 2021 12:19:24.090 [7148] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Error parsing content.
Jul 19, 2021 12:19:24.090 [7148] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Error parsing XML: Error parsing file.
Jul 19, 2021 12:19:24.090 [7148] Error — [Grabber/ČT HD-bs6oiyr9496ubapevqhv1elb] Grabber: Error obtaining device status.
Jul 19, 2021 12:19:30.594 [9012] Error — Error issuing curl_easy_perform(handle): 7
Jul 19, 2021 12:19:30.594 [9012] Warning — HTTP error requesting GET http://192.168.1.1:1990/1cd5fef2-be31-41de-a797-1b4e9c2eda5c/WFADevice.xml (7, Couldn't connect to server) (Failed to connect to 192.168.1.1 port 1990: Connection refused)
Jul 19, 2021 12:19:30.594 [9012] Error — SSDP: Error parsing device schema for http://192.168.1.1:1990/1cd5fef2-be31-41de-a797-1b4e9c2eda5c/WFADevice.xml
Why is the IP the 192.168.1.1? That’s my router btw.
I’m using a WinTV HVR-950 BDA Tuner, which is a Community Supported Tuner, but have never gotten it to work.
Whenever I try to tune a channel, I get the following in my console (Filtered to show Info, Warning, and Error)
Jul 23, 2021 20:29:17.794 [12024] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Unable to find title for item of type 5
Jul 23, 2021 20:29:17.794 [12024] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Unable to find title for item of type 5
Jul 23, 2021 20:29:35.799 [6920] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Error issuing curl_easy_perform(handle): 28
Jul 23, 2021 20:29:35.799 [6920] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Error parsing content.
Jul 23, 2021 20:29:35.799 [6920] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Error parsing XML: Error parsing file.
Jul 23, 2021 20:29:35.799 [6920] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Grabber: Error obtaining device status.
Jul 23, 2021 20:29:43.387 [12024] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Failed to start session.
Jul 23, 2021 20:29:43.387 [12024] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Recorder: Unable to create transcode session or session failed to start.
Jul 23, 2021 20:29:43.389 [12024] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Recorder: Error 16 (Recording failed. Please check your tuner or antenna.) starting the record, shutting things down.
Jul 23, 2021 20:29:43.389 [5572] Error — Subscription: Rolling media grab failed to start.
Jul 23, 2021 20:29:43.396 [12024] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Starting media grab failed.
Jul 23, 2021 20:29:43.396 [12024] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Unknown metadata type:
Jul 23, 2021 20:29:53.811 [15544] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Error issuing curl_easy_perform(handle): 28
Jul 23, 2021 20:29:53.811 [15544] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Error parsing content.
Jul 23, 2021 20:29:53.811 [15544] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Error parsing XML: Error parsing file.
Jul 23, 2021 20:29:53.811 [15544] Error — [Grabber/2.1-ds8rmx7swg4e02e6qu8nlnuz] Grabber: Error obtaining device status.
In the UI, I see this message:
Playback Error
Could not tune channel. Please check your tuner or antenna.
So I had a Plex server working perfectly with live TV, but it was 5+ years old. Built a new one this weekend, and live TV works VERY poorly. I see the same basic log as this with the “Error obtaining device status.” messages all over the logs. It’s like it works the first time, and then after that, it’s dead until I restart the server.
VERY frustrating, since it was working so well previously… 
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