Youtube thumbnails not appearing on Safari and Chrome

I have tried deleting cache and browsing history as well as removing the only extension I used i.e Grammarly. Please suggest if anything else can be done? Even the Youtube logo disappears. And sometimes it is completely normal.


In Safari

User uploaded file


In Chrome


User uploaded file

MacBook Air, macOS Sierra (10.12.3), Early 2015 model

Posted on Mar 22, 2017 7:56 PM

Reply
12 replies

Mar 23, 2017 9:44 AM in response to dialabrain

Well yes I have Avast installed. Would you suggest any other Anti Virus program?


Also I did the etrecheck and found some infected Bittorent files. I believe I should get rid of it as well.


Results are below -


Hardware Information:

MacBook Air (13-inch, Early 2015)

[Technical Specifications] - [User Guide] - [Warranty & Service]

MacBook Air - model: MacBookAir7,2

1 1.6 GHz Intel Core i5 (i5-5250U) CPU: 2-core

4 GB RAM Not upgradeable

BANK 0/DIMM0

2 GB DDR3 1600 MHz ok

BANK 1/DIMM0

2 GB DDR3 1600 MHz ok

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: en0: 802.11 a/b/g/n/ac

Battery: Health = Normal - Cycle count = 229


Video Information:

Intel HD Graphics 6000

Color LCD 1440 x 900


System Software:

macOS Sierra 10.12.3 (16D32) - Time since boot: about 8 hours


Disk Information:

APPLE SSD SM0128G disk0 : (121.33 GB) (Solid State - TRIM: Yes)

[Show SMART report]

EFI (disk0s1) <not mounted> : 210 MB

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

Macintosh HD (disk1) / [Startup]: 120.12 GB (55.35 GB free)

Encrypted AES-XTS Unlocked

Core Storage: disk0s2 120.47 GB Online


USB Information:

Apple Inc. BRCM20702 Hub

Apple Inc. Bluetooth USB Host Controller


Thunderbolt Information:

Apple Inc. thunderbolt_bus


Gatekeeper:

Mac App Store and identified developers


Adware:

~/Library/LaunchAgents/com.bittorrent.BitTorrent.plist

~/Library/LaunchAgents/com.spigot.ApplicationManager.plist

2 adware files found. [Remove]


Kernel Extensions:

/Library/Application Support/Avast/components/fileshield/unsigned

[loaded] com.avast.FileShield (3.0.0 - SDK 10.9 - 2017-02-14) [Support]


/Library/Application Support/Avast/components/proxy/unsigned

[loaded] com.avast.PacketForwarder (2.1 - SDK 10.11 - 2017-02-14) [Support]


System Launch Agents:

[not loaded] 7 Apple tasks

[loaded] 182 Apple tasks

[running] 91 Apple tasks


System Launch Daemons:

[not loaded] 42 Apple tasks

[loaded] 172 Apple tasks

[running] 97 Apple tasks


Launch Agents:

[running] com.avast.secureline.update-agent.plist (2017-03-21) [Support]

[loaded] com.avast.secureline.userinit.plist (2017-03-21) [Support]

[running] com.avast.update-agent.plist (2017-02-15) [Support]

[loaded] com.avast.userinit.plist (2017-02-15) [Support]


Launch Daemons:

[loaded] com.adobe.fpsaud.plist (2017-03-01) [Support]

[loaded] com.avast.init.plist (2017-02-15) [Support]

[loaded] com.avast.secureline.init.plist (2017-03-21) [Support]

[loaded] com.avast.secureline.uninstall.plist (2017-03-21) [Support]

[loaded] com.avast.secureline.update.plist (2017-03-21) [Support]

[loaded] com.avast.uninstall.plist (2017-02-15) [Support]

[loaded] com.avast.update.plist (2017-02-15) [Support]


User Launch Agents:

[loaded] com.avast.home.userinit.plist (2017-02-15) [Support]

[loaded] com.avast.secureline.home.userinit.plist (2017-03-21) [Support]

[loaded] com.bittorrent.BitTorrent.plist (2017-01-13) Adware! [Remove]

/usr/bin/open

[running] com.coppertino.VoxHelper.plist (2016-02-09) [Support]

[loaded] com.google.keystone.agent.plist (2017-01-14) [Support]

[loaded] com.nero.HSMMonitor.plist (2017-03-23) [Support]

[failed] com.spigot.ApplicationManager.plist (2015-08-11) Adware! [Remove]


User Login Items:

iTunesHelper Application (2017-03-23)

(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

Android File Transfer Agent Application

(~/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)

VMware Fusion Start Menu Application

(/Applications/VMware Fusion.app/Contents/Library/VMware Fusion Start Menu.app)


Internet Plug-ins:

FlashPlayer-10.6: 25.0.0.127 - SDK 10.9 (2017-03-15) [Support]

QuickTime Plugin: 7.7.3 (2017-01-31)

Flash Player: 25.0.0.127 - SDK 10.9 (2017-03-15) [Support]


User internet Plug-ins:

WebEx64: 1.1.0 - SDK 10.10 (2016-10-20) [Support]


Safari Extensions:

Grammarly for Safari - Grammarly - https://www.grammarly.com (2017-02-22)


3rd Party Preference Panes:

Flash Player (2017-03-01) [Support]

FUSE for OS X (OSXFUSE) (2015-10-26) [Support]

MacFUSE (2015-10-27) [Support]

NTFS-3G (2010-10-11) [Support]

VOX Preferences (2015-02-21) [Support]


Time Machine:

Time Machine not configured!


Top Processes by CPU:

3% fontd

2% kernel_task

1% com.apple.WebKit.WebContent(5)

0% logd

0% notifyd


Top Processes by Memory:

1.00 GB com.apple.WebKit.WebContent(5)

533 MB kernel_task

233 MB MTLCompilerService(15)

233 MB mdworker(14)

139 MB Safari


Virtual Memory Information:

865 MB Available RAM

17 MB Free RAM

3.15 GB Used RAM

848 MB Cached files

333 MB Swap Used


Diagnostics Information:

Mar 23, 2017, 03:21:26 PM ~/Library/Logs/DiagnosticReports/iTunesHelper_2017-03-23-152126_[redacted].cras h

com.apple.iTunesHelper - /Applications/iTunes.app/Contents/MacOS/iTunesHelper.app/Contents/MacOS/iTunesH elper

Mar 23, 2017, 01:58:07 PM Self test - passed

Mar 21, 2017, 03:45:37 PM /Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2017-03-21-154537_[ redacted].cpu_resource.diag [Details]

/System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.We bKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent

Mar 21, 2017, 10:42:12 AM /Library/Logs/DiagnosticReports/com.avast.daemon_2017-03-21-104212_[redacted].c pu_resource.diag [Details]

/Library/Application Support/Avast/*/com.avast.daemon

Mar 23, 2017 11:42 AM in response to Eric Root

Thank you all for such great response. I removed Bittorrent (it never worked in Mac anyway) as well as Avast which I installed as I was a Windows OS user so I was kinda skeptical about using my machine without an AV program. Here is the revised test report. The performance which was earlier Good is now Excellent which is fantastic.


But the issue with Youtube thumbnails still remains. Also, I remember a few instances where while watching a youtube video with full screen, the video would flicker for a moment. It doesn't really happen now. Its only been 14 months since I started using the Mac OS having used Windows for almost 23 years and I think I still haven't completely figured Mac OS out.


Here is the new report -


EtreCheck version: 3.1.5 (343)

Report generated 2017-03-24 00:03:15

Download EtreCheck from https://etrecheck.com

Runtime 2:11

Performance: Excellent


Click the [Support] links for help with non-Apple products.

Click the [Details] links for more information about that line.


Problem: No problem - just checking


Hardware Information:

MacBook Air (13-inch, Early 2015)

[Technical Specifications] - [User Guide] - [Warranty & Service]

MacBook Air - model: MacBookAir7,2

1 1.6 GHz Intel Core i5 (i5-5250U) CPU: 2-core

4 GB RAM Not upgradeable

BANK 0/DIMM0

2 GB DDR3 1600 MHz ok

BANK 1/DIMM0

2 GB DDR3 1600 MHz ok

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: en0: 802.11 a/b/g/n/ac

Battery: Health = Normal - Cycle count = 229


Video Information:

Intel HD Graphics 6000

Color LCD 1440 x 900


System Software:

macOS Sierra 10.12.3 (16D32) - Time since boot: less than an hour


Disk Information:

APPLE SSD SM0128G disk0 : (121.33 GB) (Solid State - TRIM: Yes)

[Show SMART report]

EFI (disk0s1) <not mounted> : 210 MB

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

Macintosh HD (disk1) / [Startup]: 120.12 GB (58.77 GB free)

Encrypted AES-XTS Unlocked

Core Storage: disk0s2 120.47 GB Online


USB Information:

Apple Inc. BRCM20702 Hub

Apple Inc. Bluetooth USB Host Controller


Thunderbolt Information:

Apple Inc. thunderbolt_bus


Gatekeeper:

Mac App Store and identified developers


Kernel Extensions:

/Applications/VMware Fusion.app

[not loaded] com.vmware.kext.vmci (7.1.2 - 2015-08-22) [Support]

[not loaded] com.vmware.kext.vmioplug.14.1.4 (7.1.2 - 2015-08-22) [Support]

[not loaded] com.vmware.kext.vmnet (7.1.2 - 2015-08-22) [Support]

[not loaded] com.vmware.kext.vmx86 (7.1.2 - 2015-08-22) [Support]

[not loaded] com.vmware.kext.vsockets (7.1.2 - 2015-08-22) [Support]


System Launch Agents:

[not loaded] 7 Apple tasks

[loaded] 186 Apple tasks

[running] 87 Apple tasks


System Launch Daemons:

[not loaded] 42 Apple tasks

[loaded] 170 Apple tasks

[running] 99 Apple tasks


Launch Daemons:

[loaded] com.adobe.fpsaud.plist (2017-03-01) [Support]

[running] com.malwarebytes.HelperTool.plist (2017-03-23) [Support]


User Launch Agents:

[running] com.coppertino.VoxHelper.plist (2016-02-09) [Support]

[loaded] com.google.keystone.agent.plist (2017-01-14) [Support]

[loaded] com.nero.HSMMonitor.plist (2017-03-23) [Support] - /Applications/HTC Sync Manager.app/Contents/Resources/HSMMonitor.app/Contents/MacOS/HSMMonitor: Executable not found!


User Login Items:

iTunesHelper Application (2017-03-23)

(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

Android File Transfer Agent Application

(~/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)

VMware Fusion Start Menu Application

(/Applications/VMware Fusion.app/Contents/Library/VMware Fusion Start Menu.app)


Internet Plug-ins:

FlashPlayer-10.6: 25.0.0.127 - SDK 10.9 (2017-03-15) [Support]

QuickTime Plugin: 7.7.3 (2017-01-31)

Flash Player: 25.0.0.127 - SDK 10.9 (2017-03-15) [Support]


User internet Plug-ins:

WebEx64: 1.1.0 - SDK 10.10 (2016-10-20) [Support]


Safari Extensions:

Grammarly for Safari - Grammarly - https://www.grammarly.com (2017-02-22)


3rd Party Preference Panes:

Flash Player (2017-03-01) [Support]

FUSE for OS X (OSXFUSE) (2015-10-26) [Support]

MacFUSE (2015-10-27) [Support]

NTFS-3G (2010-10-11) [Support]

VOX Preferences (2015-02-21) [Support]


Time Machine:

Time Machine not configured!


Top Processes by CPU:

2% fontd

1% com.apple.WebKit.WebContent(2)

1% kernel_task

0% WindowServer

0% Safari


Top Processes by Memory:

566 MB kernel_task

504 MB com.apple.WebKit.WebContent(2)

295 MB mdworker(15)

147 MB Safari

102 MB Finder


Virtual Memory Information:

1.13 GB Available RAM

38 MB Free RAM

2.87 GB Used RAM

1.09 GB Cached files

0 B Swap Used


Diagnostics Information:

Mar 23, 2017, 11:53:16 PM Self test - passed

Mar 23, 2017, 11:33:51 PM ~/Library/Logs/DiagnosticReports/BitTorrent_2017-03-23-233351_[redacted].crash

com.bittorrent.BitTorrent - /Applications/BitTorrent.app/Contents/MacOS/BitTorrent

Mar 23, 2017, 03:21:26 PM ~/Library/Logs/DiagnosticReports/iTunesHelper_2017-03-23-152126_[redacted].cras h

com.apple.iTunesHelper - /Applications/iTunes.app/Contents/MacOS/iTunesHelper.app/Contents/MacOS/iTunesH elper

Mar 21, 2017, 03:45:37 PM /Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2017-03-21-154537_[ redacted].cpu_resource.diag [Details]

/System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.We bKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent

Mar 21, 2017, 10:42:12 AM /Library/Logs/DiagnosticReports/com.avast.daemon_2017-03-21-104212_[redacted].c pu_resource.diag [Details]

/Library/Application Support/Avast/*/com.avast.daemon


Files deleted by EtreCheck:

Mar 23, 2017, 10:15:41 PM - ~/Library/LaunchAgents/com.bittorrent.BitTorrent.plist

Mar 23, 2017, 10:15:41 PM - ~/Library/LaunchAgents/com.spigot.ApplicationManager.plist

Mar 25, 2017 7:56 AM in response to divirokr

Do a backup, using either Time Machine or a cloning program, to ensure files/data can be recovered. Two backups are better than one.


Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.


Isolating an issue by using another user account


If the problem is still there, try booting into the Safe Mode using your normal account. Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up after waiting 10 seconds. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application un-installer or by using the developer’s uninstall instructions. For each disable/delete, you will need to restart if you don't do them all at once.




Safe Mode - About El Capitan also Sierra


Safe Mode Startup – El Capitan. also Sierra

Mar 23, 2017 10:59 AM in response to divirokr

Mac computers don't need anti-virus programs at this time. If you still want to use one, the below seems less intrusive than others.


ClamXav


You have adware installed. Run the report again and where you see the red Adware, click Remove. Once complete, run the report again and post a copy into a new reply.


Or download this program which was written by Thomas Reed, a long time poster. The program will do the work for you which makes it easy.


Malwarebytes Anti-Malware for Mac 10.8 and later


What should I do if Malwarebytes Anti-Malware for Mac didn't solve my problem?


Why you shouldn’t download from a Torrent site

Uninstall Avast. It tends to interfere with the computer's operation while providing minimal to no benefit.


Avast


Avast Un-install

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Youtube thumbnails not appearing on Safari and Chrome

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