# "Katalon Studio" can't be opened because Apple cannot check it for malicious software **URL:** \ **Category:** Bug Report\ **Tags:** bugs-report, katalon-studio\ **Created:** [November 30, 2019, 5:25am UTC](https://forum.katalon.com/t/katalon-studio-cant-be-opened-because-apple-cannot-check-it-for-malicious-software/36979 "2019-11-30T05:25:10Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [November 30, 2019, 5:25am UTC](https://forum.katalon.com/t/katalon-studio-cant-be-opened-because-apple-cannot-check-it-for-malicious-software/36979/1 "2019-11-30T05:25:10Z")
I downloaded the most recent Katalon Studio from [Katalon Studio Download | Katalon](https://www.katalon.com/download/) to my Mac (macOS Catalina 10.15.1). Installed it into the Applications directory, and started. A error dialog appeared which said “Katalon Studio” can’t be opened because Apple cannot check it for malicious software. ![11%20PM](https://europe1.discourse-cdn.com/katalon/original/2X/3/3d827676554d39c55f658430ee20532525c5e180.jpeg) What’s wrong? ---
**Author:** ![devalex88](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/devalex88/32/336_2.png) [@devalex88](https://forum.katalon.com/u/devalex88)\ **Post date:** [November 30, 2019, 9:50am UTC](https://forum.katalon.com/t/katalon-studio-cant-be-opened-because-apple-cannot-check-it-for-malicious-software/36979/2 "2019-11-30T09:50:06Z")
If you currently use macOS Catalina, you have to enable Katalon Studio and Katalon Studio Engine applications in **System Preferences/ Security & Privacy/ General**. We are trying to notarize KS as required by Apple for this new OS version. ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [November 30, 2019, 10:08am UTC](https://forum.katalon.com/t/katalon-studio-cant-be-opened-because-apple-cannot-check-it-for-malicious-software/36979/3 "2019-11-30T10:08:50Z")
I could find a temporary workaround at > ---
**Author:** ![kelly1](https://avatars.discourse-cdn.com/v4/letter/k/ac8455/32.png) [@kelly1](https://forum.katalon.com/u/kelly1)\ **Post date:** [December 4, 2019, 9:38am UTC](https://forum.katalon.com/t/katalon-studio-cant-be-opened-because-apple-cannot-check-it-for-malicious-software/36979/4 "2019-12-04T09:38:26Z")
Bingo, there’re quite a lot of common apps like Katalon Studio have exactly the same issue on macOS Catalina. Usually you can bypass this new macOS gateway by opening the app through **System Preferences** \> **Security & Privacy** \> Check Allow apps downloaded from App Store and identified developers \> Click **Open Anyway**. If it still doesn’t work, I assume that you are double clicking on the Katalon Studio install icon, yes? **Don’t do that.** Instead, you should **right mouse click** (or control click )on Katalon Studio icon. You should get an Open option in context menu: Select Open. Then the next dialog box you see will be similar to the one you report, but it will also have the Open button added. Choose Open and voila. It’s just a magic tip mentioned in this [article](https://www.minicreo.com/mac-uninstaller/app-cannot-be-opened-on-macos-catalina.html). Cheer ~ ---
**Author:** ![ryan.parman](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/ryan.parman/32/15073_2.png) [@ryan.parman](https://forum.katalon.com/u/ryan.parman)\ **Post date:** [November 25, 2020, 12:50am UTC](https://forum.katalon.com/t/katalon-studio-cant-be-opened-because-apple-cannot-check-it-for-malicious-software/36979/5 "2020-11-25T00:50:06Z")
A year later, and this is still an issue. Also opened [https://github.com/katalon-studio/katalon-studio/issues/404](https://github.com/katalon-studio/katalon-studio/issues/404). Our security team has disabled the ability for corporate-managed Macs to bypass the lack of notarization. We are completely unable to use this software for work until this issue is resolved. ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [November 25, 2020, 1:47am UTC](https://forum.katalon.com/t/katalon-studio-cant-be-opened-because-apple-cannot-check-it-for-malicious-software/36979/6 "2020-11-25T01:47:28Z")
@ThanhTo, @devalex88, Any updates? ---
**Author:** ![ThanhTo](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/thanhto/32/697_2.png) [@ThanhTo](https://forum.katalon.com/u/ThanhTo)\ **Post date:** [November 25, 2020, 3:33am UTC](https://forum.katalon.com/t/katalon-studio-cant-be-opened-because-apple-cannot-check-it-for-malicious-software/36979/7 "2020-11-25T03:33:14Z")
Thank you for your report, we are working on the notarization feature ! ---
**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\ **Post date:** [November 25, 2021, 3:33am UTC](https://forum.katalon.com/t/katalon-studio-cant-be-opened-because-apple-cannot-check-it-for-malicious-software/36979/8 "2021-11-25T03:33:14Z")
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