After updating to 10.12.5, I noticed that outgoing Internet connections would be slow and at some point completely stop.
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Even worse this would affect our complete office network with my colleagues also being blocked from Internet access from their Win10 machines.
Apple today released macOS Sierra 10.12.5, the fifth update to the macOS Sierra operating system that first launched in September of 2016. MacOS Sierra 10.12.5 comes more than one month after the. Why are you posting in the Lion forum, anyway have you tried the Combo update, Download macOS Sierra 10.12.6 Combo Update, download and double click to install. Might want to run First Aid from Disk Utility before and after. Make sure yo have enough disk space and your interconnection is robust, preferably via cable rather than wifi.
After unplugging the ethernet cable from my (mid 2011) iMac, the Internet started to work properly for all other connected clients. As soon as plugging my Ethernet, the outgoing connections will be stopped. Internal network connections like printers would still work but seem slower than usual.
Now I am connected over WiFi to the same network without any issues.
This problem can be reproduced by connecting the iMac by cable to the network.
iMac, macOS Sierra (10.12.5), mid 2011 iMac 21'
Posted on May 17, 2017 3:03 AM
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macOS Sierra 10.12.5 Review
The macOS Sierra specifically focuses on the performance, compatibility, stability and the security of Mac with numerous enhancements. It comes packed with different new features and various enhancements to provide the best Mac operating system. A sleek user interface with the support for all the latest devices and better compatibility features. Also, it efficiently consumes the system resources and performs all the operations without slowing down your Mac computer.
This release includes various fixes for audio stuttering when using USB headphones. Better Mac App Store compatibility with all the latest updates. Moreover, it also adds support for installing Windows 10 Creators Update. In addition, it adds support for camera RAW formats along with various Photos enhancements. Also, this release fixes a date issue for education and enterprise customers. Potential Kernel Panic prevention at the time of starting up with a NetInstall image and much more to provide a stable environment for all.
Features of macOS Sierra 10.12.5
- Intelligent OS with various enhancements
- Data synchronization and cloud features
- FaceTime, Siri, and iCloud enhancements
- Chinese trackpad and keyboard support
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- Fixes audio issues of USB devices
- Support for installing Windows 10 Creators update
- New Safari extensions and much more
Technical Details of macOS Sierra 10.12.5
- File Name: macOS_Sierra_12.5.dmg
- File Size: 4.6 GB
- Developer: Apple
System Requirements for macOS Sierra 10.12.5
- 8 GB free HDD
- 2GB RAM
- Core 2 Duo Intel Processor
Macos Sierra 10.12 Dmg
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