Amanda2767 wrote:
hi I'm unable to install macOS Big Sur. I keep getting HT201372 error. has anyone else encountered this and how did you resolve it? TIA
This <HT201372 > seems more like the Help Topic, not an error message(?) ref:
https://support.apple.com/en-us/HT201372
How to create a bootable installer for macOS - Apple Support
You would need to post more specific information...about your issue
What is your current macOS?
What is your exact Mac?
verify you are using the Safari browser to download/initiate the macOS links.
The older macOS installer backups on this server:
https://support.apple.com/en-us/HT211683