Since upgrading my two MacBooks (Air and Pro) and Mac Pro (old tower style) systems to El Capitan, I cannot connect my laptops to my Mac Pro. Months have gone by with all attempted solutions (via web research) failed.
My MacBooks cannot see ANYTHING else on the network.
From either of my MacBooks, via wifi:
• I cannot print to printers.
• I cannot see other MacBooks.
• I cannot see my Mac Pro tower (it is connected to the network via wired connection, which connects to my Airport Extreme)
• I cannot see my Mac Mini (connects to network via wired connection, STILL CONNECTS to the Mac Pro (also wired connection only), runs on 10.7.5 b/c it's too old to update)
From my Mac Pro and Mac Mini:
• I cannot see either Macbook
• Mac Mini and Mac Pro CAN see each other
BUT, the Mac Pro tower has unsolvable problems with Keychain, and cannot connect to email accounts, or does so sporadically with some success. The Keychain issue has also absorbed hours of my life, and is also without a solution. Perhaps it is a related issue, I do not know.
Can anyone please help? I am taking great pains in restraining all forms of venting/ranting for the sake of productivity, but I am truly at wits end. Thanks in advance for help solving this...
My MacBooks cannot see ANYTHING else on the network.
From either of my MacBooks, via wifi:
• I cannot print to printers.
• I cannot see other MacBooks.
• I cannot see my Mac Pro tower (it is connected to the network via wired connection, which connects to my Airport Extreme)
• I cannot see my Mac Mini (connects to network via wired connection, STILL CONNECTS to the Mac Pro (also wired connection only), runs on 10.7.5 b/c it's too old to update)
From my Mac Pro and Mac Mini:
• I cannot see either Macbook
• Mac Mini and Mac Pro CAN see each other
BUT, the Mac Pro tower has unsolvable problems with Keychain, and cannot connect to email accounts, or does so sporadically with some success. The Keychain issue has also absorbed hours of my life, and is also without a solution. Perhaps it is a related issue, I do not know.
Can anyone please help? I am taking great pains in restraining all forms of venting/ranting for the sake of productivity, but I am truly at wits end. Thanks in advance for help solving this...