If the software satisfies the customer needs or it passes
acceptance criteria

The software release (when to stop testing) depends on the 
following factors which would be defined in the Exit 
criteria of the Test Plan:

1. The Application/Product should be stable.
2. When all the High severity bugs are fixed.
3. The rate at which the bugs are found is minimal.
4. The project is at minimum risk.

Regards,
Imthiyaz. Shaik

the customer has to satisfied the software. for that 
purpose tester should elimated bugs,errors and defaults in 
the software then it can be release

We can never really be sure that all errors have been 
eliminated.  As we found and fixed errors, apart from 
customer have satisfied the software, also we have raised 
our confidence that software will perform as intended.

We will stop at "Test Execution Closure" i.e at whre we 
will get stable build

If the software ie to be released furninshes all the 
requirements that are defined in the Software Requirement 
Specification(SRS) and if no bug is present or the high 
severity bugs are totally removed.

if the software satisfies the customer need nd its passes 
the acceptance criteria and high severity bugs are totally 
removed.

Factors depends on Releasing a Product/Software

1. The Application/Product should be stable and behaving as 
per the expectation

2. All High/Medium Severity Issues needs to be resolved and 
undergo in QA cycle

3. Regression Harness Execution(If exists) must be in 
acceptable conditions (Example - Pass= 96% etc) - This 
parameters depends and vary across Organizations

4. Risk involvement must be as low as possible
5. Coverage Matrix/Traceability Matrix should be satisfied 
the End-user Needs and shouldn't deviate x% ( Depends on 
Organizations Strategy)

6. The Issues which can't be fixed as part of release cycle 
should be documented and get it approved by the stack 
holder