QuickBooks Error H2O2: [instant fix] When a company file is accessed from another computer located on the host computer, issues may occur due to failure to access the company file. If the multi-user access is disabled, company files can’t be accessed by other workstations. This is due to the QuickBooks Error H2O2. Multi-user access should be enabled to access the company files all over the network. When there is an issue monitoring access, then QBDBMGRN is responsible for this issue as it is part of the QuickBooks Database Manager server that is used to monitor the access of company files all over the network. If any issue is found in QBDBMGRN, it leads to the QBDBMGRN not running on this computer intuit error. In this blog, you will learn the causes that led to this error and the solutions that can be used to rectify this error. Read this segment completely and find the best-fit solution to your problem. We are here to fix your queries, so don’t delay contacting us. We are just one call away, so give us a ring at 1.855.738.2784. Our Customer support team will immediately provide you with the best solution. Detrimental Causes Of QuickBooks Error H202 1. Issues in hosting multi-user 2. Incorrect Hosting Configuration 3. Due to blockage in communication by the Firewall 4. Conflict with DNS Server 5. QuickBooks Services Not Running 6. Corrupted Network Data File Rectify the error using two easy solutions Running QuickBooks Database Server Manager on your server and fixing it manually can be the most effective solution for users to rectify the error. Solutions are given below: Method 1: Use QuickBooks Tool Hub to run the QuickBooks Database Server Manager on your server 1. Click Network Issues in QuickBooks Tools Hub. 2. It will ask you to install QuickBooks if you don’t have one. Otherwise, click QuickBooks Database Server Manager. 3. If you found your company file folder, click Start Scan, browse the location of your company file folder, and then click Start Scan in QuickBooks Tool Hub. 4. It will automatically repair firewall permissions. When scanning is done, click Close. 5. Launch QuickBooks on each workstation where the QuickBooks Error H2O2 is occurring. Go to file and click switch to multi-user. Method 2: Fix H2O2 manually 1. Click the start menu. 2. Type Run in the search bar. 3. Fill the Run window field with “services.msc” and press Enter. 4. You will find a list, find QuickBooksDBXX, and double-click on it. 5. Choose Automatic in Startup type. 6. See whether the service status is running or started. If none of them, click start. Conclusion QuickBooks Error H2O2 is mainly the issue with the company file. When a company file is located on the server computer and can’t accessed by other workstations. It is caused by different phenomena, such as Issues in hosting multi-users, Incorrect Hosting Configuration Due to blockage in communication by the Firewall, and Conflict with the DNS Server. This blog contains detailed solutions to resolve this error. Read the blog completely and perform the solutions accordingly. If you find it difficult to perform, contact us at 1.855.738.2784.