I am running Exchange 2007, with Forefront 2010 I am having some lingering security counters errors on the server. I performed the Lodctr /r and added the Exchange performance counters back using : lodctr.exe alsperf.inilodctr.exe davexctr.inilodctr.exe dscperf.inilodctr.exe dspctrs.inilodctr.exe eseperf.inilodctr.exe mdbperf.ini from Program Files\Microsoft\Exchange Server\Bin\perf\AMD64 Lastly, I went to the exchange powershell console and did the ResetSearchIndex.ps1 on all databases. I still however have the following event log errors.: Error 106MSExchange Common Performance counter updating error. Counter name is Average Batch Latency, category name is MSExchange Search Indexer. Optional code: 3. Error 10021MSFTESQL-Exchange Could not get performance counter registry info for msftesqlIDX for instance Exchange due to the following error: The operation completed successfully. 0x00000000. I used the newsgroup posting here http://social.technet.microsoft.com/Forums/en-US/exchangesvrgeneral/thread/eb15c6ad-216f-4a70-a78a-1d09bf82c0db/ to troubleshoot and fix most of the errors but I need a little help fixing the last ones. Thank you Joe

Did you make some changes on you Exchange server?The below step may helps your problem resolved, please try them step by step strictly. Good Luck!ResetSearchIndex.ps1 is useful if you need to reset the search index after moving mailboxes or databases to another server or just to reset it in general. This will do the following:1. Stop the MSExchangeSearch service (MSExchangeSearch Event ID 0)2. Remove the current index data directory for the database specified when running the script. This data is normally stored in the database location that is prefaced with CatalogData-<GUID of database>.2. Start the MSExchangeSearch service (MSExchangeSearch - Event ID 0)3. Enable Indexing for the database specified (MSExchange Search Indexer - Event ID 108)4. Perform a full crawl for the Mailbox Database (MSExchange Search Indexer - Event ID 109)5. Complete the full crawl pass (MSExchange Search Indexer - Event ID 110)For more information regarding Exchange search, see the following linksUnderstanding Exchange Searchhttp://technet.microsoft.com/en-us/library/bb232132.aspx Managing Exchange Searchhttp://technet.microsoft.com/en-us/library/aa998289.aspx Test-ExchangeSearchhttp://technet.microsoft.com/en-us/library/bb124733.aspx Exchange Search FAQhttp://www.exchangeninjas.com/ExchangeSearchFAQ Best Regards!

The change was installing Forefront 2010. During the Forefront installation the previous version of Forefront was removed. Then during the Forefront 2010 installation we got a performance counter error which was fixed with lodctr.exe /R. We were able to install Forefront 2010 be we have been struggling with the counter errors ever since. Thank youJoe