Search.hidesearch.bid: what it is and how to remove it
Search.hidesearch.bid is a highly suspicious search engine that belongs to the ChumSearch browser hijacker's family. This potentially unwanted application spreads as the hidesearch_DS browser extension in freeware downloads.
Facts checked October 6, 2026. Removal steps tested on Windows 11 (26H2) and checked against Microsoft's and the browser makers' current documentation. Sections marked as our earlier report are the original text: they describe the threat as it was then and have not been reviewed since. The 2026 status, the removal steps and the questions are current.
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Search.hidesearch.bid: summary
| Distribution | Deceptive ads, software bundles |
|---|---|
| Damage | Privacy issues, installation of malware/PUPs |
| name | Search.hidesearch.bid |
| Type | Browser hijacker, PUP |
| Symptoms of infection | Search results are shown from a different prover and contain ads; infected device runs slower as does the internet connection; browser preferences altered without your direct approval |
| Associated extensions | hidesearch_DS |
| Removal | Scan the PC with security software to find and remove the malware and anything installed with it. Fortect scans Windows for malware and repairs the system files and settings it damaged. Remove it nowTo use the full-featured product, you have to purchase a license for Fortect. The scan is free. |
Show 8 more facts
| Detection names | No Microsoft detection name is known |
|---|---|
| Name | Search.hidesearch.bid |
| Symptoms | A changed search engine |
| Evidence | 4 write-ups by security sites; details still limited |
| Search page | novirus.uk |
| Browsers | Chrome, Edge and Firefox |
| First seen | 7 July 2021 |
| Facts checked | 6 October 2026 |
Is Search.hidesearch.bid dangerous? What it collects
From our report of Jul 2021 · not reviewed since
Installing hidesearch_DS extension will cause a browser hijack
Search.hidesearch.bid is a highly suspicious search engine that belongs to the ChumSearch browser hijacker's family.
This potentially unwanted application spreads as the hidesearch_DS browser extension in freeware downloads. Though, once it sneaks into the computer unnoticed, it might hijack all browsers installed on the affected machine.
The browser hijacker seems to be aimed at Mac OS X users. The main page of the search tool has a link to MacKeeper website. However, this cleaning and protection tool for Macs is also known as a potentially unwanted program (PUP).
The homepage of Search.hidesearch.bid looks simple and legitimate. It includes the about page, links to Amazon and Alixpress, and redirects search queries to the Bing results page which is absolutely legit. However, the links to popular shopping platforms seem to be modified. Therefore, doing your shopping via these links might let you fall for Amazon virus or Aliexpress virus.
However, it's important to mention possibly dangerous redirect tendencies of this PUP. Despite the fact that this search tool displays Bing search results, it still can initiate redirects to third-party websites once you click on a needed link. In this way, developers generate revenue from driving traffic to partners' sites.
Keep in mind that these websites might belong to cybercriminals. Thus, after you install the article's culprit you might become a victim of a phishing attack, technical support scam, or get infected with various malware, for example, ransomware.
Thus, once you discovered that your browser's homepage, default search engine, or/and new tab URL address was replaced with an unknown domain, you should look up for hidesearch_DS extension and other suspicious components on your browser and computer.
These security tools will automatically remove all unwelcomed guests. However, you can also use other anti-malware software which is capable of detecting recent cyber threats and eliminating them entirely.
Additionally, you can follow the guidelines given at the end of the article and remove Search.hidesearch.bid manually. However, security experts from NoVirus.uk note that it's better to dedicate this task to the security software to avoid failure if you are dealing with the hijacker for the first time. Afterward, use the optimizer to delete all tracking cookies and resolve system-related errors.


From our report of Jul 2021 · not reviewed since
Avoid browser hijacker by "unpacking" software installers
The suspicious browser extension that is responsible for altering browser's settings spreads in the freeware or shareware packages.
Generally speaking, you might find it offered to download together with any free programs. Thus, you should watch out and do not accidentally install it.
When using Advanced/Custom installers, you might see the list of pre-selected third-party applications or find the statements like "I agree to make Search.hidesearch.bid my default search engine." Thus, you have to remove these ticks to prevent browser hijack and other unpleasant features.
Keep in mind that Standard, Recommended or Quick settings do not have this functionality. For this reason, when you use one of these installers, you give indirect permission for PUPs to infiltrate the system. It goes without saying that you should not use them.
From our report of Jul 2021 · not reviewed since
More from our earlier report on Search.hidesearch.bid
- Removal of the PUP is made easy when you use a reliable anti-malware software
- By using the software you will fix all virus damage
Check your browser and PC
- Address:
novirus.uk
How to remove Search.hidesearch.bid
How to remove Search.hidesearch.bid and get your search engine back
Remove the extension first.
The search settings only stay fixed once nothing on the PC can change them again.
Step 1: Remove extensions you did not add
In Chrome open
chrome://extensions, in Edgeedge://extensions, and in Firefox the menu > Extensions and themes.Remove every extension you do not remember adding, especially search, new tab, coupon, PDF, weather or video downloader add-ons. Check every browser and every profile, because each keeps its own list.
If an extension has no Remove button or comes back, a browser policy holds it (see "Managed by your organization" in the procedure below). The pages are the same on Windows 11 and Windows 10.

Chrome on Windows 11: More > Extensions > Manage extensions. Full procedure with screenshots: Remove a browser extension
Step 2: Put the search engine back and delete novirus.uk
In Chrome open Settings > Search engine > Manage search engines and site search, make an engine you trust the default, and delete
novirus.ukfrom the list.In Edge type
search engineinto the search box at the top of Settings and open Manage search engines; in Firefox use Settings > Search. Then check the homepage and the new tab page in the same settings, because hijackers change all three.If novirus.uk is back after a restart, an extension, a program or a policy still sets it, so finish the other steps and check again. The settings are the same on Windows 11 and Windows 10.

Chrome on Windows 11: check Search engine and On startup. Full procedure with screenshots: Reset a browser and fix a hijacked search engine
Step 3: Uninstall programs you did not mean to install
Search.hidesearch.bid rarely comes alone: it is usually installed by, or together with, a free program. In Windows 11 open Settings > Apps > Installed apps, in Windows 10 Settings > Apps > Apps & features, and sort by install date.
Uninstall every entry from the day the trouble began that you did not install on purpose, for example a download manager, a converter or a browser you never chose.
Keep drivers and entries from Microsoft, Intel, AMD, NVIDIA or your PC's maker unless you are sure.
Full procedure with screenshots: Uninstall a program or app in Windows On uGetFix
Step 4: Reset the browser
A reset removes what the steps above could miss:
- changed start pages
- site permissions
- hidden settings
In Chrome open Settings > Reset settings > Restore settings to their original defaults; in Edge Settings > Reset settings; in Firefox Help > More troubleshooting information > Refresh Firefox.
Tip: Bookmarks and saved passwords stay, while extensions are turned off and the search engine and start page return to the defaults.
Reset every browser on the PC, including Edge, which Windows 11 and Windows 10 always have.

Chrome on Windows 11: Settings > Reset settings. Full procedure with screenshots: Reset a browser and fix a hijacked search engine
Step 5: Scan the PC, then run the offline scan
A scan finds the parts of Search.hidesearch.bid that the manual steps cannot see. In Windows Security > Virus & threat protection > Scan options, start a Full scan and quarantine what it reports.
Follow it with Microsoft Defender Antivirus (offline scan) > Scan now, which restarts the PC and checks the disk while Windows and the malware are not running.
It takes about 15 minutes and works the same in Windows 11 and Windows 10. If either scan finds something, run the full scan again after removal until it comes back clean.

Windows 11: Windows Security > Virus & threat protection > Scan options. Full procedure with screenshots: Run a Microsoft Defender Offline scan
Instructions for each browser and system
The detailed steps for every browser and system this guide covers. Open the one you use.
Uninstall from Windows
Typically, the article's culprit targets Mac OS X. However, if it hijacked your Windows browser, you should look up hijacker-related components in the system too.
Uninstall from Windows 10/8:
- Type Control Panel into the Windows search box and open the result.
- Under Programs, select Uninstall a program.

Uninstall from Windows 7/XP:
- Click on Windows Start > Control Panel (Windows XP users should click on Add/Remove Programs).
- In Control Panel, select Programs > Uninstall a program.

Remove the unwanted program:
- In the Programs and Features window, look for any recently installed suspicious entries, select them, and click Uninstall.
- If User Account Control appears, click Yes to confirm, then complete the removal.

Remove from Google Chrome
The instructions below will show you how to wipe out browser hijackers from Google Chrome:
Delete malicious extensions from Google Chrome:
- Open Google Chrome, click on the Menu (three vertical dots at the top-right corner) and select More tools > Extensions.
- In the newly opened window, you will see all the installed extensions. Uninstall all suspicious extensions related to the unwanted program by clicking Remove.

Clear cache and web data from Chrome:
- Click on Menu and pick Settings.
- Under Privacy and security, select Clear browsing data.
- Select Browsing history, Cookies and other site data, as well as Cached images and files.
- Click Clear data.

Change your homepage:
- Click menu and choose Settings.
- Look for a suspicious site in the On startup section.
- Click on Open a specific or set of pages and click on three dots to find the Remove option.
Reset Google Chrome:
If the previous methods did not help you, reset Google Chrome to eliminate all the unwanted components:
- Click on Menu and select Settings.
- In the Settings, scroll down and click Advanced.
- Scroll down and locate Reset and clean up section.
- Now click Restore settings to their original defaults.
- Confirm with Reset settings.

Remove from Microsoft Edge
Delete unwanted extensions from MS Edge:
- Select Menu (three horizontal dots at the top-right of the browser window) and pick Extensions.
- From the list, pick the extension and click on the Gear icon.
- Click Remove.

Clear cookies and other browser data:
- Click on the Menu (three horizontal dots at the top-right of the browser window) and select Settings > Privacy, search, and services..
- Under Clear browsing data, pick Choose what to clear.
- Select Cookies and other site data and Cached images and files. (apart from passwords, although you might want to include Media licenses as well, if applicable) and click on Clear.

Restore new tab and homepage settings:
- Click the menu icon and choose Settings.
- Then find On startup section.
- Click Remove next to any suspicious startup page.
Reset MS Edge if the above steps did not work:
- Press on Ctrl + Shift + Esc to open Task Manager.
- Click on More details arrow at the bottom of the window.
- Select Details tab.
- Now scroll down and locate every entry with Microsoft Edge name in it. Right-click on each of them and select End Task to stop MS Edge from running.

Delete extensions from MS Edge (Chromium):
- Open Edge and click select Settings > Extensions.
- Delete unwanted extensions by clicking Remove.

Clear cache and site data:
- Click on Menu and go to Settings.
- Select Privacy, search and services.
- Under Clear browsing data, pick Choose what to clear.
- Under Time range, pick All time.
- Select Clear now.

Reset Chromium-based MS Edge:
- Click on Menu and select Settings.
- On the left side, pick Reset settings.
- Select Restore settings to their default values.
- Confirm with Reset.
- This will disable extensions and reset startup pages but will not delete bookmarks, saved passwords, or browsing history.

Remove from Mozilla Firefox (FF)
Remove dangerous extensions:
- Open Mozilla Firefox browser and click on the Menu (three horizontal lines at the top-right of the window).
- Select Add-ons.
- In here, select the unwanted extension and click Remove.

Reset the homepage:
- Click three horizontal lines at the top right corner to open the menu.
- Choose Settings.
- Under Home, set your preferred homepage and new tab settings.
Clear cookies and site data:
- Click Menu and pick Settings.
- Go to Privacy & Security section.
- Scroll down to locate Cookies and Site Data.
- Click on Clear Data...
- Select Cookies and Site Data and Temporary cached files and pages, then click Clear.

Reset Mozilla Firefox
If clearing the browser as explained above did not help, reset Mozilla Firefox:
- Open Mozilla Firefox browser and click the Menu.
- Go to Help and then choose Troubleshooting Information.

- Under Give Firefox a tune up section, click on Refresh Firefox...
- Once the pop-up shows up, confirm the action by pressing on Refresh Firefox.

Delete from Safari
Remove dangerous extensions:
- Open Safari, click Safari in the menu at the top-left of the screen, and select Preferences.
- Go to the Extensions tab, look for any suspicious entries, and click Uninstall to remove them.

Clear history and website data:
- Click Safari in the menu and pick Clear History.
- Set Clear to all history and confirm with Clear History.

Reset Safari:
- Click Safari in the menu and select Preferences > Advanced.
- Enable Show Develop menu in menu bar.
- From the menu bar, click Develop and select Empty Caches.

Delete from macOS
Follow these steps to remove all virus-related files and programs from Mac OS X:
Remove the unwanted application:
- From the menu bar, select Go > Applications.
- In the Applications folder, look for any suspicious entries, then drag them to Trash (or right-click and pick Move to Trash).

Delete leftover files and folders:
- Select Go > Go to Folder.
- Enter /Library/Application Support and remove any suspicious folders related to the unwanted program.
- Repeat the same check in the /Library/LaunchAgents and /Library/LaunchDaemons folders, deleting any suspicious entries.

- Finally, empty the Trash to permanently remove the leftovers.
Protect your privacy - employ a VPN
There are several ways how to make your online time more private - you can access an incognito tab.
However, there is no secret that even in this mode, you are tracked for advertising purposes. There is a way to add an extra layer of protection and create a completely anonymous web browsing practice with the help of VPN. This software reroutes traffic through different servers, thus leaving your IP address and geolocation in disguise.
Besides, it is based on a strict no-log policy, meaning that no data will be recorded, leaked, and available for both first and third parties. The combination of a secure web browser and VPN will let you browse the Internet without a feeling of being spied or targeted by criminals.
No backups? No problem. Use a data recovery tool
If you wonder how data loss can occur, you should not look any further for answers - human errors, malware attacks, hardware failures, power cuts, natural disasters, or even simple negligence.
In some cases, lost files are extremely important, and many straight out panic when such an unfortunate course of events happen. Due to this, you should always ensure that you prepare proper data backups on a regular basis.
If you were caught by surprise and did not have any backups to restore your files from, not everything is lost. is one of the leading file recovery solutions you can find on the market - it is likely to restore even lost emails or data located on an external device.
From our report of Jul 2021 · not reviewed since
Guidelines to remove Search.hidesearch.bid virus
To remove Search.hidesearch.bid from the startup page and replace your built-in search engine, you have to uninstall all browser extensions, programs, and helper objects that might be associated with the browser hijacker. The easiest way to do that is by using our recommended security tools.
You can also follow our prepared manual removal instructions and do this task by yourself. However, if you overlook any entries or files, the infection might renew itself upon the next reboot.
Questions about Search.hidesearch.bid
Why does my search engine keep changing to novirus.uk?
Because something keeps setting it. An extension can change the search engine every time the browser starts, and an ad-supported program in Windows can do it for every browser and re-add the extension after you remove it. Some hijackers also add a policy that locks the setting.
Changing the search engine back only works once the source is gone. Remove extensions you do not recognise, uninstall programs installed around the time novirus.uk first appeared, and then set the search engine again. If it still returns, check the browser for the Managed by your organization message and follow the policy steps in this guide.
Can novirus.uk see my searches?
Yes. Every search typed into the address bar goes to novirus.uk first, which is how it earns money. It can log the query, the time and an identifier for your browser, and some hijackers also collect the pages you visit through their extension.
The privacy policy of such sites usually allows sharing that data with partners. Once the hijacker is removed and your own search engine is set again, new searches no longer reach it. Searches already sent cannot be taken back, so avoid entering sensitive information until the clean-up is finished, and clear cookies afterwards.
What is novirus.uk?
It is the search page used by the browser hijacker Search.hidesearch.bid. It has no search index of its own: it forwards your queries to another search engine and adds ads and tracking along the way.
People rarely choose it on purpose; it becomes the default search engine, home page or new tab after an extension, program or policy changes the browser settings. The page itself is not malware, but it should not be in your browser if you did not set it. The steps above remove the source and restore your settings.
Is novirus.uk dangerous?
It is not designed to infect the PC, but it is not neutral either. It logs searches, adds sponsored results that are hard to tell apart from real ones, and its ad partners are not checked as strictly as those of major search engines.
Some hijacker pages have shown ads for fake updates, tech support scams and unwanted software. The main harm is to privacy. Remove Search.hidesearch.bid, and if you entered personal data on sites reached through its results, check those sites carefully.
Do I have to fix every browser?
Yes, every one where the search engine or start page changed. In the cases we checked, Search.hidesearch.bid affected Chrome, Edge and Firefox.
Each browser stores its own search settings and extensions, so fixing one does not fix the others, and Windows-level changes such as shortcuts can affect each browser differently. Work through them one at a time:
- remove the extension
- check the policies
- restore the search engine
- start page
If you sync a browser, stay signed in so the fix spreads to your other computers.
Did novirus.uk record my searches?
Almost certainly. Logging is the point of a hijacker search page: each query, with your IP address, browser details and the result you clicked, is valuable to advertisers.
The operators of novirus.uk can store and share that data under their own privacy policy, which you never agreed to knowingly. There is no way to delete it from their side. What you can do is stop the flow:
- remove Search.hidesearch.bid
- clear cookies and site data for novirus.uk
- treat sensitive searches made in the meantime as known to a third party
Can I just block novirus.uk?
You can, but it treats the symptom. Blocking the domain in a firewall or the hosts file makes searches fail instead of redirecting, while the extension or program that set it keeps running and collecting data.
Hijacker operators also switch to new domains in updates, so a block may stop working within weeks. Remove the source instead, then set your own search engine. If you want extra protection afterwards, turn on Potentially unwanted app blocking in Windows Security, which stops many hijacker installers before they run.
What do I lose if I reset Chrome or Edge?
Less than you might think. A reset turns off all extensions, which you can turn back on one by one, restores the default search engine, home page, new tab and pinned tabs, and clears cookies, so you are signed out of most sites.
Bookmarks, history, saved passwords and autofill data stay. Firefox's equivalent, Refresh Firefox, keeps the same essentials but removes add-ons completely. Before you reset, make sure you know your main passwords or have them saved, since you will need to sign in again.
Why can't I change my search engine back?
Because something keeps setting it. If an extension controls the search engine, Chrome and Edge show a note that an extension is controlling this setting, and your change is reverted. If a policy controls it, the field is greyed out and the browser shows Managed by your organization.
Remove the extension first, then the policies, and only then change the search engine; the change will stay. If it still reverts, look for a program in Installed apps or a scheduled task that reinstalls the extension.
Will Fortect remove Search.hidesearch.bid?
Fortect scans Windows for malware and unwanted programs and repairs the system files and settings they change, and its free scan shows what it finds on your PC before you decide anything.
For Search.hidesearch.bid, follow the plan above as well: the browser steps take back permissions and settings that no scanner treats as a threat, and uninstalling the program that brought it removes the source.
Run Microsoft Defender's full scan and, if anything was found, its offline scan as a second opinion. If the symptoms are gone after the plan and both scans are clean, there is nothing more to do.
Sources
- Tech Advisor: Do Macs get viruses? (read October 6, 2026)
- FTC: How to recognize, remove and avoid malware (read October 6, 2026)
- Microsoft Learn: Microsoft Defender Offline (read October 6, 2026)
- Microsoft Learn: How Microsoft names malware (read October 6, 2026)