Quality is delighting customers
When the end user is trying to install any application by clicking on setup.exe, if installation doesn't starts or even if installation starts but terminates abruptly and installation procedure fails. Such issues are good examples for High Priority & High Severity bugs.
In Simple example, if user goes to Login screen(when it is already member) and gives VALID credentials to required fields and system throws exception like Invalid credential.
This bug must be as High PRIORITY and High SEVERITY
Could you please explain your above sentence, 'Severity depends on Technical side' , How? If possible please explain with example.
As said by Zahid,Severity depends on the Technical Side. For example , u had a simple error in Login screen. From UI prepective it may look so simple but for code prepesctive it may affect other working areas and requires lot of code need to be changed.
Like wise Priority depends on the Bussiness Side. For example you have for an error on logon scenario you may give high priority in general. But for a particular client you are working, that scenario may be least bothered. In this case this issue should be low priority.
If the product name is misspelled on the login screen, that is low severity (because it does not hurt usability). but high priority (because it looks really bad if you don't).
If a certain scenario causes the product to crash badly, it is high severity. But the dev manager might declare it low priority if that scenario is very rare.
The more is hinders the usability of the product, the higher the severity.
The more important it is to fix, the higher the priority.
Often those scores are similar.
I am Vivek Kulkarni from Pune, just joined the group.
I think High Severity and High Priority bugs should be decided on the basis of how much the bug is affecting the application.
If user is not able to move ahead at any stage(page/function) in the application due to any bug(like page crash, database connectivity issues etc.), should be considered as High Severity and High Priority bug.