CBA said the bank had recognised the computer problem had affected the accounts of both business and individual customers. But all should now have normal access to their funds.
The bank said it had processed the overdue running of a computer file by noon.
"During the file's processing, there were brief, managed outages of up to 15 minutes to our online channels CommBiz and NetBank,'' the bank said in a statement.
Commonwealth Bank Glitch
"The file has now completed processing. All accounts are now up to date and there is no impact to our online channels.
Problems with CBA's auto-teller machine network were also resolved, the bank said.
"Customers whose accounts required data from the late running file may have had difficulty accessing cash through ATMs during processing this morning,'' it said.
"As the file has now been processed, this is no longer an issue for those customers.
Earlier today, the CBA reported the file was primarily linked to business customer accounts, but it had identified a few retail customers were also affected.
"At most, up to 5 per cent of CBA accounts are impacted," the bank said.
The bank said it apologised to customers experiencing problems.
Commonwealth Bank Glitch
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