You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Macbook Pro 16" error code -100BF

i'm trying to do a rescue boot wipe of a drive to redeploy at the office, and getting an error code I'm not finding on line -


error code is -100BF


any insights?


Thanks



[Re-Titled by Moderator]

Posted on Oct 19, 2020 9:58 AM

Reply
Question marked as Top-ranking reply

Posted on Oct 19, 2020 10:07 AM

rixhawz wrote:

i'm trying to do a rescue boot wipe of a drive to redeploy at the office, and getting an error code I'm not finding on line -

error code is -100BF

any insights?

Thanks





error code...

In Internet Recovery, these low negative thousands error messages indicate that your provided Wi-Fi Network is inadequate in some fashion, and cannot be used (for this purpose) in its current state.


Common problems include:

Hidden Network-name

required use of a proxy server to get Internet access

required use of a login page to get Internet access

Use of a login server or certificate to get Internet access

Use of PPPoE in the Mac to get Internet access (typically only applies to DSL)

Use of Fixed IP address rather than good old DHCP

Variance of the time by more than five minutes

Failure of Router to provide workable DNS server addresses, or providing 0.0.0.0 [may produce -2002f]


If you have an Ethernet port, you may in some cases be able to move your Mac close to the Router and connect to the Router using Ethernet.


The higher the number, the more obscure the problem.


Also, make certain the Date&Time and Time Zone are correct within 5 minutes.


Power Cycle your router

Disable any VPN or Proxy server

Uninstall any third party Cleaners,Optimizers,Anti-virus

Do a safe boot  https://support.apple.com/en-us/HT201262----


ref: Grant Bennet-Alder

https://discussions.apple.com/thread/250370425?answerId=250705456022#250705456022





In addition—Macs with the T2 chip ex 16" MBP


About Startup Security Utility - Apple Support


What is the Startup Security Utility on Mac? - Apple Support


2 replies
Question marked as Top-ranking reply

Oct 19, 2020 10:07 AM in response to rixhawz

rixhawz wrote:

i'm trying to do a rescue boot wipe of a drive to redeploy at the office, and getting an error code I'm not finding on line -

error code is -100BF

any insights?

Thanks





error code...

In Internet Recovery, these low negative thousands error messages indicate that your provided Wi-Fi Network is inadequate in some fashion, and cannot be used (for this purpose) in its current state.


Common problems include:

Hidden Network-name

required use of a proxy server to get Internet access

required use of a login page to get Internet access

Use of a login server or certificate to get Internet access

Use of PPPoE in the Mac to get Internet access (typically only applies to DSL)

Use of Fixed IP address rather than good old DHCP

Variance of the time by more than five minutes

Failure of Router to provide workable DNS server addresses, or providing 0.0.0.0 [may produce -2002f]


If you have an Ethernet port, you may in some cases be able to move your Mac close to the Router and connect to the Router using Ethernet.


The higher the number, the more obscure the problem.


Also, make certain the Date&Time and Time Zone are correct within 5 minutes.


Power Cycle your router

Disable any VPN or Proxy server

Uninstall any third party Cleaners,Optimizers,Anti-virus

Do a safe boot  https://support.apple.com/en-us/HT201262----


ref: Grant Bennet-Alder

https://discussions.apple.com/thread/250370425?answerId=250705456022#250705456022





In addition—Macs with the T2 chip ex 16" MBP


About Startup Security Utility - Apple Support


What is the Startup Security Utility on Mac? - Apple Support


Macbook Pro 16" error code -100BF

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.