Published by CompTIA

Report an issue with CompTIA CertMaster Practice (Companion App).
Send the customer service your feedback so they can fix your issue asap.



Email Support directly



Chat with our AppContacter AI Support


Why should I report an Issue with CompTIA CertMaster Practice (Companion App)?

  1. AppContacter will directly Email your issue/feedback to an apps's customer service once you report an issue and with lots of issues reported, companies will definitely listen to you.
  2. Pulling issues faced by users like you is a good way to draw attention of CompTIA to your problem using the strength of crowds.
  3. Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.

CompTIA CertMaster Practice (Companion App) Customer Insights

1. With regards to courseware, reinforcement learning algorithm is generally suitable as exam practice, though some questions are suspect, and explanations provided for some solutions are too generic (boilerplate definitions) or not contextualised to question (unable to explain why an option is correct/incorrect).It would be great if these A+ questions were proofread and if the app didn't constantly crash.

2. I hope to see an improvement as this tool is being used in my certification class! I wish there was a a spot to send feedback on the screen for each question that is written poorly so it could be reviewed.The app keeps crashing when I open a module.

3. Its nice to be able to practice questions on my phone but you would think they would put in a little effort for all the money paid to access anything on there.If you enrol on this courseware, be sure to do it in a browser or desktop.

4. The mobile version implies the user is on the go and wants to make progress.App used to work on my Samsung S10+ Now when I load it up, it shows me Mastered, In progress, and not started.

5. This app was convenient for me due to my job, but now, it's hindering my studies.This app is 6 years old and looks like it was made and is maintained by one person (basic stock photos/very simple effortless design).

6. So this means that the bug fixes are not being applied (patched) when the app gets updated.I am so grateful there is a user friendly app for CertMaster.

7. It would be useful for practice before my exam, as I travel a lot.Using Linux + which is new to me so it's overwhelming.

8. If this could be fixed, that would be fantasticGreat app when you get past the 40 million times it crashes trying to sync it with your account, that is, if it ever does sync with your account.

9. I started using this app to study for my Security+ and in the beginning it was great.

10. I was able to go between my phone and computer to complete sections and they stayed synced.

11. But now, I can't even get into a module without the app crashing and at the worst time for me,(seeing as how my test is in a few weeks).

Steps to Troubleshoot & Fix CompTIA CertMaster Practice (Companion App) Issues

1. Fix CompTIA CertMaster Practice (Companion App) Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart CompTIA CertMaster Practice (Companion App): Restarting the app will resolve most errors.
  2. Update the CompTIA CertMaster Practice (Companion App) App. Here is how:
    1. On Android goto PlayStore » Search for "CompTIA CertMaster Practice (Companion App)" » Open CompTIA CertMaster Practice (Companion App) » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for CompTIA CertMaster Practice (Companion App) » click "UPDATE".
  3. Clear CompTIA CertMaster Practice (Companion App) app cache: Clearing cached data will force your app to retrieve the latest data directly from CompTIA CertMaster Practice (Companion App) servers.
    1. On Android, goto Settings » Apps » Select "CompTIA CertMaster Practice (Companion App)" » click Storage » click "Clear Cache".
  4. Check CompTIA CertMaster Practice (Companion App) app permissions. If any of these permissions required to use your device's features are disenabled, CompTIA CertMaster Practice (Companion App) might not work.
  5. Uninstall and reinstall CompTIA CertMaster Practice (Companion App). If nothing else has worked, completely uninstall CompTIA CertMaster Practice (Companion App) then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing CompTIA CertMaster Practice (Companion App) not working


2. Fix CompTIA CertMaster Practice (Companion App) Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make CompTIA CertMaster Practice (Companion App) be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to CompTIA CertMaster Practice (Companion App) not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, CompTIA CertMaster Practice (Companion App) may not be able to connect to the Internet when running in the background.

Reported Issues