Error message: b04access.00f eve'. Read of address 000001B4

** problem ：** Recently opened in the company toad When , Sudden opening error ：access violaton at address 004F0B0F in module ‘plsqldev.eve’.Read of address 000001B4

** Solution ：** This is a toad Open the cause of path conflict . Using the company's office computer , There are three users ：administrator,user,usr11, Then switch user, It is found that you can log in normally .
I consulted my old colleagues in the company , He said he was user It already exists toad The address of ：
C:\Users\zhaoyb\AppData\Roaming\Quest Software\Toad for Oracle

Delete or back up this address （C:\Users\zhaoyb\AppData\Roaming\Quest Software88）, Remember to put... In the task manager toad It can only be closed , Otherwise it may not work .
Then the problem is solved .

Other answers have also been searched on the Internet , One of them is reinstalled toad Of , Then I tried , It's reassembled 6 This has not been achieved .
If you have only one computer user , reinstall toad It should be achievable . If it is a multi-user of the company , It is suggested to follow my way .