When I store a item, my outlook believes that it's a virus... And I can accept only for 10 minutes...

How to remove that?

Thank you.

This is Microsoft Security patch, introduced in Outlook 2000 SR1.

We have no workaround for this.

what do you advise me?

This depends on Outlook version, see Microsoft support site:

http://support.microsoft.com/ 
Microsoft Knowledge Base Article - 290499
OL2002: Administrator Information About E-Mail Security Features
Microsoft Knowledge Base Article - 290498
OL2002: Add-in or Custom Solution Causes a Warning to Appear

Microsoft Knowledge Base Article - 262634
OL2000: Known Issues with the Outlook E-mail Security Update


We are very careful with automatic changing of any security setting's of Outlook/office.
This means:
if Microsoft offers options to trust access to Outlook for external software, user has to do this
manualy.

I have Outlook 2000 with the last service pack.
I don't have a Exchange Server.

You do not have any tip ?

[?]

No, no more tips. Even MS Office products (excel etc.) will have the same problem:

OFF2000: Known Issues with Office 2000 After You Apply the Outlook E-mail Security Update
View products that this article applies to.
This article was previously published under Q263210
SUMMARY
When you install the Outlook Virus Attachment Security Update, some Microsoft Office 2000 functionality may be impaired.
MORE INFORMATION
For additional information about functionality that may be impaired in Microsoft Office 2000, click the article numbers below to view the articles in the Microsoft Knowledge Base:
263074 OFF2000: Using 'Send To' to Send E-mail Prompts After You Apply Outlook E-Mail Security Update

263092 OFF2000: Routing Office Document Prompts After You Apply Outlook E-mail Security Update

REFERENCES
For more information about how other Microsoft Office products may be affected by the Outlook E-mail Security Update, please see one of the following articles in the Microsoft Knowledge Base, depending on which version of Outlook you have:
262634 OL2000: Known Issues with the Outlook E-mail Security Update

262618 OL98: Known Issues with the Outlook E-mail Security Update

For additional information about the Virus Attachment Security Update, click the article number below to view the article in the Microsoft Knowledge Base:
262631 OL2000: Information About the Outlook E-mail Security Update

There is not an other solution for those which one paid a multi-user licence ?

[:)] [:)]

You can try this tool:
http://www.snapfiles.com/get/clickyes.html 

Express ClickYes is a handy tool that runs in the system tray automatically clicks the Yes button for the Outlook Security security prompt, that asks you to confirm mail sending from third party applications.

See also:
http://office.microsoft....ance/HA011364471033.aspx 

This is a great free tool:
http://www.mapilab.com/outlook/security/