Outdated Antivirus software causes bad performance of Outlook

Pst Repair - It is quite shocking that an outdated Anti virus software can be a cause for bad performance of Outlook application. But it is a fact. Usually Antivirus software is installed on the system, so that your system and all the software and data that reside in it remain safe. The main function of an Antivirus software is to scan all the files of your system. But an out-of-date antivirus program creates serious difficulties for you. It ruins the overall software performance, and prevents you from accessing your data, by corrupting your files. For example, in case of Outlook application, Outlook stores all the data in a single PST file. But if your Antivirus software has corrupted the file and made the application unusable, then you stand to lose your data. In such a situation, backups are normally used. But if backups are unavailable, then an inbuilt Inbox repair tool also can be used. However, if the inbuilt Inbox repair tool does not show you proper results, then the last option to repair Outlook PST file is using an Outlook PST Repair tool.

Let's consider an error message that creates serious problems for you. When you attempt to open MS-Office Outlook in your system, sometimes you fail to open it and alternatively you receive an error message on the screen same as shown below:

"Your Antivirus software has blocked the file you were trying to open."

On getting this error message, the data of all the mail-objects becomes inaccessible.

Cause:
Some of the causes that may be the reason for above error message are discussed here:

Incompatibility of software is one of the main reason. Antivirus software is not compatible with MS-Office Outlook.
Use of an outdated anti-virus software and damaged signature files of Antivirus software might also result in the above error.
You are attempting to open a PST file that is infected by a virus and your Antivirus software is not able to remove that virus.
Destroyed or damaged PST file may also be the reason.

Resolution:
For solving above error message you need to keep track of some measures:

In case you have newly installed the Antivirus, then its incompatibility might be the issue. Change the Anti-virus to ensure the problem is not encountered.
If outdated Anti-virus software is the issue, then try to resolve it bydownloading the latest version of the Anti-virus software. Also, make sure that since virus definitions are updated regularly, you upgrade the version of your Anti-virus periodically.
If PST file corruption is the probable cause, then use inbuilt Inbox repair tool to repair damaged PST file. To execute this tool follow the below stated steps

(1) Go to Start >> Search >> All files and folders.
(2)Type Scanpst.exe in name box.
(3)By double clicking, open Inbox repair tool.
(4)Specify the path of the PST file and use repair command.
If the above measures resolve your problem, then it is fine. If not, then repair Outlook PST file using a third party Outlook PST Repair tool. These tools are specially developed to repair corrupt PST file in almost all corruption cases.