DOCUMENT:Q59654 14-DEC-1999 [win95x] TITLE :ALT+TAB Six-Second Delay in Real/Standard Modes PRODUCT :Microsoft Windows 95.x Retail Product PROD/VER:WINDOWS:3.0,3.0a OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows versions 3.0, 3.0a ------------------------------------------------------------------------------- SYMPTOMS ======== If you are using a PS/2 Mouse Port style mouse, you may experience a five- to six-second delay switching between MS-DOS applications in real or standard mode in Microsoft Windows 3.0. NOTE: This occurs not only on genuine PS/2 machines, but on any machine with a PS/2-style mouse port, such as the COMPAQ 386S and 20e. CAUSE ===== This delay is caused by the presence of an MS-DOS mouse driver. The MS-DOS mouse driver reinitializes the mouse port with each ALT+TAB, thus causing the delay. WORKAROUND ========== If you can do without a mouse driver for your MS-DOS applications, this increase task switching considerably on this type of machine. MORE INFORMATION ================ The products included here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability. Additional query words: 3.00 3.0 3.0a 3.00a win30 3rdparty KBHW ====================================================================== Keywords : Technology : kbWin3xSearch kbZNotKeyword3 kbWin300 kbWin300a Version : WINDOWS:3.0,3.0a ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.