How do I safely remove the Omiga Plus browser hiijacker?

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1

Edith, For info have you 'googled' Omiga Plus browser hijacker removal?..
No AV product is capable of providing you with 100% protection although AVG are always working 24/7.
Have a look @ these 2 articles…
[1] (https://support.avg.com/SupportArticleView?urlname=What-to-do-when-I-suspect-an-undetected-file-is-infected) 
[2] (https://support.avg.com/SupportArticleView?urlname=Why-AVG-did-not-detect-a-virus)

2

Edith, For info have you 'googled' Omiga Plus browser hijacker removal?..
No AV product is capable of providing you with 100% protection although AVG are always working 24/7.
Have a look @ these 2 articles…
[1] (https://support.avg.com/SupportArticleView?urlname=What-to-do-when-I-suspect-an-undetected-file-is-infected) 
[2] (https://support.avg.com/SupportArticleView?urlname=Why-AVG-did-not-detect-a-virus)