Published by National Comprehensive Cancer Network (NCCN) on Oct 24, 2024

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Why should I report an Issue with NCCN Guidelines®?

  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 National Comprehensive Cancer Network (NCCN) 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.
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About NCCN Guidelines®

1. By defining and advancing high-quality cancer care, NCCN promotes the importance of continuous quality improvement and recognizes the significance of creating clinical practice guidelines appropriate for use by patients, clinicians, and other health care decision-makers around the world.

2. This easy-to-use and convenient format will further assist health care professionals in their implementation of the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®), thus improving the quality and effectiveness of care provided to patients with cancer.

3. The intent of the NCCN Guidelines is to assist in the decision-making process of individuals involved in cancer care—including physicians, nurses, pharmacists, payers, patients and their families—with the ultimate goal of improving patient care and outcomes.

4. NCCN is dedicated to improving and facilitating quality, effective, equitable, and accessible cancer care so all patients can live better lives.

5. Through the leadership and expertise of clinical professionals at NCCN Member Institutions, NCCN develops resources that present valuable information to the numerous stakeholders in the health care delivery system.

6. The NCCN Guidelines are a comprehensive set of guidelines detailing the sequential management decisions and interventions that apply to 97 percent of cancer cases in the United States.

7. NCCN is a not-for-profit alliance of leading cancer centers devoted to patient care, research, and education.

8. Over the past 25 years, NCCN has developed an integrated suite of tools to improve the quality of cancer care.

9. The NCCN Guidelines® document evidence-based, consensus-driven management to ensure that all patients receive preventive, diagnostic, treatment, and supportive services that are most likely to lead to optimal outcomes.

10. Because new data are published continuously, it is essential that the NCCN Guidelines also be continuously updated and revised to reflect new data and new clinical information.

11. The National Comprehensive Cancer Network® (NCCN®), is pleased to present the Virtual Library of NCCN Guidelines® app formatted for Smart Phones & Tablet.

NCCN Guidelines Customer Insights

1. Please repair it, i need the guideline for my exam.. thx beforeCan't access the app directly; the icon is nowhere in my phone... Everytime I have to open it via searching in Playstore!! This update has brought more negetives than positive!!New version takes too long to open, don't automatically update guidelines and doesn't open guideline at first time always showing errorThe worst thing about this app is that you just can't see how much your download has progressed, and nothing is available without download.

2. Interface can be more user friendly though, and BTW, I'm a geek.The previous version was much better..the program is slow and many downloaded files don't open and keep saying opening error and I do not know why!!The newedt version, i cant open the guideline, although ive downloaded the guideline.

3. Please make it more user-friendly!The new version is not good , bot able to see the guidelines , and also the new updates are not getting downloaded !!! Kindly rectify thisWhen I have to cosult a guideline the app starts updating the guidelines.

4. App closes every time I try to open a downloaded guideline.

5. There is no option to stop this auto update.Cannot open the app on landscape mode on a tablet.

6. Excellent tool for easy reference.

7. Trying reinstall, but the problem still remain the same.

8. Thank you!No longer usable.

9. Useless until fixed.

10. Could you please fix this issue.

Steps to Troubleshoot & Fix NCCN Guidelines Issues

1. Fix NCCN Guidelines Not Working/Crashes/Errors/Unresponsive & Black/White screen:


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


2. Fix NCCN Guidelines Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make NCCN Guidelines 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 NCCN Guidelines not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, NCCN Guidelines may not be able to connect to the Internet when running in the background.

Reported Issues