Erpresearch iPhone


Erpresearch is a browser hijacker that is particularly aimed at Apple iOS devices such as iPhones and iPads. Erpresearch embeds itself in the main web browser of the device and causes page redirects to specific web locations.


The Erpresearch Virus will spam your calendar with fake notifications.

Erpresearch is compatible with most web browsing applications, including popular ones like Safari and Chrome. And once it integrates with them, it will generally also start messing with their settings. As a result, users may find that their homepage has been replaced and there’s now a new default search engine, too. Other changes may include the addition of the new buttons or such to the interface.

But most prominently, the telltale signs of a browser hijacker infection like Erpresearch, Tionassociet and Smenexperio are the intensive generation of popups, banners and other types of online ads on your screen during browsing sessions. At times the amounts of these ads can be so large that they can even startle users and make them believe they’ve been infected with some virus.

The good news is that Erpresearch is not a virus or malicious program and therefore it will not be able to harm your device in any way. However, there are some pretty good reasons to remove this hijacker from your iPhone or iPad. For one, its presence could potentially slow your device down as a result of its constant ad-generating activities. And for another, those very same ads and page redirects do have the potential of exposing you to various insecure web locations. And so if you would rather not run into some ransomware or Trojan horse while browsing the web, you can refer to the instructions in the removal guide below.


Name Erpresearch
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Changes made to the browser’s interface and its settings, such as the addition of a new homepage, the replacement of the default search engine, etc.
Distribution Method Apps like Erpresearch are, as a rule, always part of other applications, especially low-quality ones that come from questionable sources.

Remove Erpresearch iPhone Calendar Virus

If you have an iPhone virus, continue with the guide below.

If you have an Android virus, please use our Android Malware Removal guide.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have a Windows virus, please use our Windows Virus Removal guide.

This is the first thing you should try if you are getting targeted by this kind of spam.

  1. Log in yo your account at and tap on Calendar.
  2. Tap on the Settings icon (a gear icon) located in the lower-left corner of the screen.
  3. Now, select Preferences and then Advanced.
  4. Change the Invitations setting from In-app notifications to Email to and provide your current email.
    Erpresearch iPhone
  5. Lastly, click on Save to confirm the change.

Note that after you do that, you will no longer get any events automatically added to your Calendar. Instead, they’d go to the email you have provided. This also applies to the spam you’ve been getting – it would too go to your email, but at least you won’t be getting the spam notifications on your screen.

The next part of this post will tell you how to check your iPhone for an actual Calendar spam virus and how to deal with such a virus if it gets detected.

To remove Erpresearch Calendar Virus quickly you can try this:
1. Go to Settings on your iPhone/iPad.
2. Open Passwords and Accounts.
3. Then go to Subscribed Calendars.
4. Look for Erpresearch or anything that looks suspicious and delete it.

Erpresearch iPhone

First you need to close all pop-ups that are currently open.

  • If the pop-up has a checkbox named “Don’t show more alerts from this webpage” click on the checkbox before closing the Ad.
  • If a Block Alerts button happens to appear after you shut down a pop-up on your iPhone, iPad, or iPod touch tab that button to stop receiving alerts from the same page.

In case that a pop-up fails to close after performing the above operations:

  • On your Mac you should make your Safari browser close forcibly by pressing Command-Option-Esc. Select Safari from the list of Apps and force close it. After you force close it you need to restart Safari, but please hold the shift button while it starts. This will prevent any pesky Ads from opening automatically.
  • On your iPhone, iPad, or iPod touch you can do the same by pressing the home button twice in a quick succession. You’ll then see a preview of all apps that have been recently used. Swipe left to find Safari and then swipe up on the app’s preview to close it forcibly In order to prevent Safari from opening unwanted windows on startup go to Settings->Safari and Clear History, as well as Website Data. This will also clear your browser history and cookies so keep that in mind and export them if you want to keep them.

Erpresearch iPhone

Choose Preferences from the Safari menu. Then do the following:

  1. Select the Security icon and then click on “Block pop-up windows“. This should stop many types of pop-ups from appearing.
  1. Next check on your homepage and the settings for the search engines. Adware likes messing with those. We can not provide more specific instructions for this, as you may be using many different browsers.
    • Select the General icon and look at the Homepage field. It should either be empty or filled with the address of the Homepage you want.
    • Follow up on the Search icon. Again it should be either the default search engine or any that you have set for yourself. Note that in some versions of Safari these settings are found in the General panel/

Erpresearch iPhone

Open Safari and click on the Extensions button. Note that Adware use extensions almost exclusively to inject the pop-up Ads into your browser. Any extension on this list that you do not remember installing yourself is likely planted there by the Adware. Remove ALL extensions you are unfamiliar with.

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