非常感谢。
这是我的网址信息http://pm.solutioncn.com 用户名admin 密码123456789 ，麻烦帮我看下，搞了一个下午了。上次安装很顺利的。
这是我根目录下的web.config文件内容：
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<s y s t e m.webServer>
<defaultDocument>
<files>
<clear />
<add value="index.php" />
<add value="index.shtml" />
<add value="index.asp" />
<add value="index.htm" />
<add value="index.html" />
</files>
</defaultDocument>
<rewrite>
<rules>
<rule name="已导入的规则 1" stopProcessing="true">
<match url="(.*)$" ignoreCase="false" />
<conditions logicalGrouping="MatchAll">
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
<add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" />
</conditions>
<action type="Rewrite" url="index.php/{R:1}" />
</rule>
</rules>
</rewrite>
</s y s t e m.webServer>
</configuration>

直接访问 pm.solutioncn.com 可以自动跳转到 index.php ，的确不能退出，把zentaopms/config/my.php中debug的值改成true，登录禅道点击退出，然后看一下 zentaopms/tmp/log/ 下面的php开头的文件，看有什么报错。

<?php
die();
?>

17:49:22 Declaration of deptModel::delete() should be compatible with that of model::delete() in D:\wwwroot\pm\public_html\module\dept\model.php on line 415 when visiting /index.php?m=user&f=logout

17:49:22 session_destroy() [function.session-destroy]: Session object destruction failed in D:\wwwroot\pm\public_html\module\user\control.php on line 794 when visiting /index.php?m=user&f=logout

17:49:22 Declaration of deptModel::delete() should be compatible with that of model::delete() in D:\wwwroot\pm\public_html\module\dept\model.php on line 415 when visiting /index.php?m=user&f=login

17:49:23 Declaration of deptModel::delete() should be compatible with that of model::delete() in D:\wwwroot\pm\public_html\module\dept\model.php on line 415 when visiting /index.php?m=my&f=index

<?php
die();
?>
20160421 17:49:22: /index.php?m=user&f=logout
SELECT * FROM `zt_config` WHERE owner IN ('s y s t e m','admin') ORDER BY `id`
SELECT * FROM `zt_lang` ORDER BY `lang`,`id`
INSERT INTO `zt_action` SET `objectType` = 'user',`objectID` = '1',`actor` = 'admin',`action` = 'logout',`date` = '2016-04-21 17:49:22',`comment` = '',`extra` = '',`product` = ',0,',`project` = '0'

20160421 17:49:22: /index.php?m=user&f=login
SELECT * FROM `zt_config` WHERE owner IN ('s y s t e m','admin') ORDER BY `id`
SELECT * FROM `zt_lang` ORDER BY `lang`,`id`

20160421 17:49:23: /index.php?m=my&f=index
SELECT * FROM `zt_config` WHERE owner IN ('s y s t e m','admin') ORDER BY `id`
SELECT * FROM `zt_lang` ORDER BY `lang`,`id`
SELECT *, IF(INSTR(" done", status) < 2, 0, 1) AS isDone FROM `zt_project` WHERE iscat = '0' AND status != 'done' AND deleted = '0' ORDER BY `order` desc
SELECT * FROM `zt_project` WHERE id IN ('') ORDER BY `order` desc
SELECT id, project, estimate, consumed, `left`, status, closedReason FROM `zt_task` WHERE project IN ('') AND deleted = '0'
SELECT project, date AS name, `left` AS value FROM `zt_burn` WHERE project IN ('') ORDER BY `date` desc
SELECT * FROM `zt_product` WHERE deleted = '0' AND status != 'closed' ORDER BY `order` desc
SELECT * FROM `zt_product` WHERE id IN ('') ORDER BY `order` desc
SELECT product, status, count(status) AS count FROM `zt_story` WHERE deleted = '0' AND product IN ('') GROUP BY product, status
SELECT product, count(*) AS count FROM `zt_productplan` WHERE deleted = '0' AND product IN ('') AND end > '2016-04-21 17:49:23' GROUP BY product
SELECT product, count(*) AS count FROM `zt_release` WHERE deleted = '0' AND product IN ('') GROUP BY product
SELECT product,count(*) AS conut FROM `zt_bug` WHERE deleted = '0' AND product IN ('') GROUP BY product
SELECT product,count(*) AS count FROM `zt_bug` WHERE status = 'active' AND deleted = '0' AND product IN ('') GROUP BY product
SELECT product,count(*) AS count FROM `zt_bug` WHERE AssignedTo = '' AND deleted = '0' AND product IN ('') GROUP BY product
SELECT * FROM `zt_action` WHERE 1 ORDER BY `date` desc limit 0, 14
SELECT commiter, account, realname FROM `zt_user` WHERE commiter != ''
SELECT id, account AS name FROM `zt_user` WHERE id IN ('1')
SELECT * FROM `zt_todo` WHERE account = 'admin' AND date >= '1970-01-01' AND date <= '2109-01-01' AND status IN ('wait','doing') ORDER BY `date`,`status`,`begin` LIMIT 10
SELECT * FROM `zt_todo` WHERE account = 'admin' AND date >= '1970-01-01' AND date <= '2109-01-01' AND status IN ('wait','doing') ORDER BY `date`,`status`,`begin` LIMIT 10
DESC `zt_task`
SELECT t1.*, t2.id as projectID, t2.name as projectName, t3.id as storyID, t3.title as storyTitle, t3.status AS storyStatus, t3.version AS latestStoryVersion FROM `zt_task` AS t1 LEFT JOIN `zt_project` AS t2 ON t1.project = t2.id LEFT JOIN `zt_story` AS t3 ON t1.story = t3.id WHERE t1.deleted = '0' AND t1.assignedTo = 'admin' ORDER BY `id` desc LIMIT 10
SELECT t1.*, t2.id as projectID, t2.name as projectName, t3.id as storyID, t3.title as storyTitle, t3.status AS storyStatus, t3.version AS latestStoryVersion FROM `zt_task` AS t1 LEFT JOIN `zt_project` AS t2 ON t1.project = t2.id LEFT JOIN `zt_story` AS t3 ON t1.story = t3.id WHERE t1.deleted = '0' AND t1.assignedTo = 'admin' ORDER BY `id` desc LIMIT 10
SELECT t1.id, t1.title, t2.name as product FROM `zt_bug` AS t1 LEFT JOIN `zt_product` AS t2 ON t1.product=t2.id WHERE t1.assignedTo = 'admin' AND t1.deleted = '0' ORDER BY `id` desc LIMIT 10
SELECT id, title FROM `zt_story` WHERE deleted = '0' AND assignedTo = 'admin' ORDER BY `id` desc LIMIT 10
SELECT account, realname, deleted FROM `zt_user` ORDER BY `account`

好像说的是session没有清除，是我哪里没有设置正确吗？

检查一下session目录的读写权限。

非常感谢，php 的session目录没有“修改权限”，现在已经设置好了，有同样问题的朋友可以参照这个方法修改下就好了，IIS7.5+PHP完美支持。