LAST UPDATED: OCT 13, 2022
You see this message pop up on your Mac:
![System Extension Blocked System Extension Blocked](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7B%22Query%22%3A%22CjK%2Bb6ybq8LxbHrhokzcBokCCi7afNoQD5n81VA3w4o%2Bn6BK1bH%2FyNRuDWNguJJt0OLT%2F1Jg%2Ba3WQUYRmbyrV8e6JQWDxEzAcA4rKrJbx4Tzi9UDt%2BFGOCCercUEWAwrZmLN0BUfm16fPBUUmZ79JU6xYg3hsYkP4CZJGBmLLauG2lBS%2BNiVqvaVMR%2BcX%2F%2FvIOVLE%2B6STt2clbNPKImByziL6Cp7Uby6zHCJ4CVmOWIL6UsL6VjsxZ8URM78qQuX%22%2C%22iv%22%3A%22889e3a849fb2ad7c43203dedcd062555%22%7D)
Why did this happen?
Trend Micro Antivirus needs System Extension to provide complete protection for your Mac.
How do I fix this?
Allow the Trend Micro Antivirus Extension depending on what macOS version you have:
Expand All
For macOS 13 Ventura
Allow Trend Micro Antivirus Extension on macOS Ventura
- Click Open System Settings.
![Open System Settings Open System Settings](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7B%22Query%22%3A%22CjK%2Bb6ybq8LxbHrhokzcBokCCi7afNoQD5n81VA3w4ryLY5rRZE4uBwF3XMGnORDWHLkV1%2FcLwnqICEDZknwkr811foPdEdwB5uam16xC4a0Dr3%2Fu5j8iEKx1iaIUFhp%2BeDoetUn3fczxMzYmKHLV643epAzi5ExW8LsAUGsq9VpPSvH7a5%2FCpNa08gM1RAUu0GkgXmRCc9fVXaFFECOLzkBTzwVi9RVUKlLkCM8zYMxvgrD9UbMSoNqEfHlD4lB%22%2C%22iv%22%3A%22889e3a849fb2ad7c43203dedcd062555%22%7D)
- The Privacy & Security window should open. Scroll down to Security then click Details....
![Privacy & Security Privacy & Security](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7B%22Query%22%3A%22CjK%2Bb6ybq8LxbHrhokzcBokCCi7afNoQD5n81VA3w4qTpbeY2fwUCzNjvdClPig9tGHRlKp4C1R6dWCMcrXrtrXu85JoNM1PNfrgJHortQAhWYc7icgSwKksqatleu72H%2Fa94A1mIv2WeWB0B4AiZyW6slxPi1JpslAmvj85SnJ6e9y9TONGbahCbZYFacuzYO41o%2Fe3HuW4r68XXaIkpqGSuscVHYbNmvfTGH8JPgcsR%2FYp9aJXeKO6R4Q7xUOj%22%2C%22iv%22%3A%22889e3a849fb2ad7c43203dedcd062555%22%7D)
- Enter your Mac username and password, and then click Unlock to allow changes.
- Enable all Trend Micro Antivirus Extension items, then click OK.
![Trend Micro Antivirus Extension Trend Micro Antivirus Extension](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7B%22Query%22%3A%22CjK%2Bb6ybq8LxbHrhokzcBokCCi7afNoQD5n81VA3w4oR%2BVd1Jq64TESmz6coSKd6gUYyOUYxK3pv0or5O%2BLNFK1l6lGSTBe61VrTIkV1yMBEdOLhJFtnPxH94EX8EntiJk%2Bp0Yf3gibdv1x%2FaOiwyRiD6LTtJolY%2B6MOiHaYh1PavcesSssQK46CzgrYWtyA2gUguVVD%2BCoKuWDOdh%2Br%2Bjk0DDmxzCkX5TFNcIIPXnLBXaBhYe9yAKy6B1YQpdt5%22%2C%22iv%22%3A%22889e3a849fb2ad7c43203dedcd062555%22%7D)
- Click Allow when you see this pop up below.
![Allow Trend MIcro iCoreService on Mac Allow Trend MIcro iCoreService on Mac](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7B%22Query%22%3A%22CjK%2Bb6ybq8LxbHrhokzcBokCCi7afNoQD5n81VA3w4pjR8AEllLbVl9UMiFQOobvOQDLKvYoqiSjCWm%2FBjGvRJF0ebFA9SMzLnr9NRFFaaAnJKgv9kKNdygaaZ9jGEpeu%2FEwR3Swu3LU6lq8lnRsHHMFOqNtNMnVoSeYuqvKFBUY9AmShXSanZzeF1XC3LQxDcsvZwCg%2BV5xcuYjMOq6QjOddzQj1fynCWmSssaSEnn5M4ltJlJbMiafBydI7VSq%22%2C%22iv%22%3A%22889e3a849fb2ad7c43203dedcd062555%22%7D)
For macOS 12 Monterey and below
Allow Trend Micro Antivirus Extension on macOS Monterey and below
- Click OK on the pop up.
- Click Continue in the Permission Overview page.
- Click Open System Preferences.
![System Extension Blocked System Extension Blocked](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7b%22Query%22:%22bmp7NvEXEaVhdAIH3ecNrxwBIYksZVxPDncYkhcVxax8WdFAmNFVSaKL8gng6TXXIbQEHolGOFvu9Hs6vhbZonliONiOZLYimpuQTVNJFP0xEy3x4mSm7LSQm8rIHDF/CXWO14NREJyQLAalCoWdCBeYudVP5FCQ%2BGNI6EabeleAIRnTsDl9E7zEQW3wdIMFZSdvIyNed2K%2Bt5lrISmbN677EfVDRoAg/lIK4RtBnK5t4rx8UiDPXxBT8fqi2jmP%22%2c%22iv%22:%22411f7c92d43a3b101653bab66e536e32%22%7d)
- Unlock the page.
![System Extension Blocked System Extension Blocked](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7b%22Query%22:%22bmp7NvEXEaVhdAIH3ecNrxwBIYksZVxPDncYkhcVxax8WdFAmNFVSaKL8gng6TXXIbQEHolGOFvu9Hs6vhbZovRFLYWklMya03Z%2B%2BMF8S6ZnJrBr4tzhZORvTDMTP/tX5AaQpy7w33OJcsdvVvc%2BblRFI8pR7ZQ8irXd0LjdYzgl1NC1g5VV3dGzJqE75xT0mKxkhhezYmEE1uUqOF7ZWD1cIum5WSTSMNHAieRS0aSu3LkO04U9VhoZXXBqXW6l%22%2c%22iv%22:%22411f7c92d43a3b101653bab66e536e32%22%7d)
- Click the Allow button.
![System Extension Blocked System Extension Blocked](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7b%22Query%22:%22bmp7NvEXEaVhdAIH3ecNrxwBIYksZVxPDncYkhcVxax8WdFAmNFVSaKL8gng6TXXIbQEHolGOFvu9Hs6vhbZoh8olGN4N1NawEzg8dpTomhjrdx9Qis5cb5aQvLI8bDI4IWBdl8U6poe%2BqYcYT3AqpKwGlW69Vu9yqffh95n7rUQkdjXlEqIpUpfS0UG3lNwavcImVxXlBfLLhazoNf580N2L/u1UJxA8ghVRupMffNsZXmWeqPUrQl/%2BXmL/gDJ%22%2c%22iv%22:%22411f7c92d43a3b101653bab66e536e32%22%7d)
- Select all Placeholder Developer, and then click OK.
![System Extension Blocked System Extension Blocked](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7b%22Query%22:%22bmp7NvEXEaVhdAIH3ecNrxwBIYksZVxPDncYkhcVxax8WdFAmNFVSaKL8gng6TXXIbQEHolGOFvu9Hs6vhbZovEME2OnWp%2B0MXu0q7fLOy9pbtOxvVW%2BeP2iO/4uGd5Y6gT3A1hcH6VW4mG8%2BQpLoMU9C5vAo%2BZPTDUKPmezqawgIWRoT%2BebT8I1pz1uMQpg/99wqv%2BlTGcH/bpJVJ0WSLmVKLogX1X03gqkMiFbgQ6JDA5Wfst/NYNNfr7QMqo/%22%2c%22iv%22:%22411f7c92d43a3b101653bab66e536e32%22%7d)
- Click Allow when you see this popup below.
![System Extension Blocked System Extension Blocked](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7b%22Query%22:%22bmp7NvEXEaVhdAIH3ecNrxwBIYksZVxPDncYkhcVxax8WdFAmNFVSaKL8gng6TXXIbQEHolGOFvu9Hs6vhbZohqU7UAMFPcKxx4qkGxG2glr8V5KUdH0oSNdRUzv%2BHuOkLrE/VzLeB26ErvcsBbjYJpjBc3AYKzAkxT0ddxbuMHTQqp6BLkKTRynMfdVlSefRqNZGj6f3R/geqptVkHmLjduRN0h%2B1MRwqTLu4GZyiwSh4UmX/RARBiAmxcXDOFs%22%2c%22iv%22:%22411f7c92d43a3b101653bab66e536e32%22%7d)
- You will find that the page has changed, click the Continue button.
- Click the Open System Preferences button.
- Unlock the page if it is locked.
- Select Full Disk Access, and then tick Trend Micro Antivirus and Trend Micro Antivirus Extension.
Make sure to select both Trend Micro Antivirus and Trend Micro Antivirus Extension.
![System Extension Blocked System Extension Blocked](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7b%22Query%22:%22bmp7NvEXEaVhdAIH3ecNrxwBIYksZVxPDncYkhcVxax8WdFAmNFVSaKL8gng6TXXIbQEHolGOFvu9Hs6vhbZohmQAg3bvqKjv0HCFnjYcrVryMDjDEzaUoavCwL6ngG3eIbw%2B9iVP84l9FG0alW/OcKlPOaggKohSLOf0TOeXEywjhtw5gSyQFwgUPmUJgpOAuaYBAUr5IRb0Dm6JPZ0JQsQy%2BplHvcScj6iH2VfdHQInphPDinzxYqbXKfFnL45%22%2c%22iv%22:%22411f7c92d43a3b101653bab66e536e32%22%7d)
- Click Verify to validate the necessary permissions.
![System Extension Blocked System Extension Blocked](https://powerbox-na-file.trend.org/SFDC/DownloadFile_iv.php?jsonInfo=%7b%22Query%22:%22bmp7NvEXEaVhdAIH3ecNrxwBIYksZVxPDncYkhcVxax8WdFAmNFVSaKL8gng6TXXIbQEHolGOFvu9Hs6vhbZovRyitabxV2m%2Bf42YG4pGNumK6J1pLNcD%2Ba8BZ4alMwyrPbFfmpZv9uG2YPYyOO1nHvzRl7CbFHkvaNucI7rStMOd2eCr%2BHNia1SoAiC5R8CVK1uToUl0qBjUrBlDAs1%2BsH5Kds0%2BMTL91RZF%2Bw3JChxMnUKLjUHrO3ir4vUUdTs%22%2c%22iv%22:%22411f7c92d43a3b101653bab66e536e32%22%7d)
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