Overview: If you are new to SQL or searching for a solution to troubleshoot SQL Server error 15105 error or just need a refresher, this article is definitely for you.

SQL Server is a proprietary relational database management system (RDBMS)  developed by Microsoft. As a database server, it is a software product with the primary function of storing, managing and retrieving data.  It is a crucial part of every data analyst toolkit, and for a good reason - they allow you to extract data from a database and present it in a way that is easy  to understand, easy to learn , powerful and versatile. However, there are times when users are unable to open the SQL Server , this can be a really frustrating situation for any user. No need to worry! In this post , we are going to cover some of the basic queries of SQL Server and discuss the possible solution that helps you to fix this SQL Server is not working issue. 

Let's have a look for a very common user query related to SQL Server 15105 error code 

15105 SQL Server Error - Possible Causes 

Error 1515 code in SQL Server is related to input/output issues. It usually occurs when the SQL Server service account does not have the relevant permission to access or write to the specific file. Here are some possible causes and solution for SQL Server error 15105:

  1. Insufficient Permission 
  2. File / Folder Path Issue 
  3. Drive Space 
  4. Antivirus or Security Software 
  5. Network Share Permission 
  6. SQL Server Account Change Issue 
  7. Technical Issue with MDF File

Best Ways to Resolve SQL Server Error 15105 

There are primarily two methods available for resolving the “SQL Server is not working ” issue , which we will dive into now:  

  1. Manual Solution 
  • The manual method involves troubleshooting and resolving the SQL Server error not working issue through the user itself. However, it requires careful execution of steps, avoid any corruption issues. 

      2. Professional Solution 

  • The professional solution implies using the specialized tool or software designed to handle SQL Server error without any hassle. This method is often recommended by numerous IT experts or professionals, particularly for those who may not have in-depth technical expertise in this field. 

Now, let us explore each solution in a detailed manner for resolving the “ SQL Server not working” issue. 

Technique 1 : Manual Solution to Fix Error 15105 SQL Server 2008 r2 

Before proceeding with the manual approach, ensure that you have enough space on the drive where your data files are located. Additionally run a defragmentation and check the available space on the drive. Make sure that after these processes , at least 15% of the drive space is free. This will help you to optimize the performance and storage of your data file. 

Follow the step by step procedure mentioned below for fixing the “SQL Server is not working  issue :

Step 1. First of all, navigate to the original folder location on the shared network. 

Step 2. Right click on the folder option and choose the “sharing and security” option.

Step 3. Under the sharing table, click on the “permission setting” button

Step 4. Assign full access permission to the account that you are using for the backup. 

Attention : Limit the duration of these permission if needed 

Step 5. After adding the necessary account, click on the “apply" button and then hit “OK”.

Step 6. In the security tab, add all relevant accounts and provide appropriate privileges.

Step 7. Press the “apply” button and lastly click “OK” to save the changes. 

Technique 2 : Professional Solution to Fix SQL Server Error 15105 

In most cases, the manual method is not recommended for resolving the “SQL Server is not working” issue as it may lead to data damage or corruption. Therefore, choosing the correct approach is always the ether option. SysTools SQL Recovery Tool is one of the finest way to resolve SQL Server error 15105 without having any trouble. 

In addition, it helps to repair and remove corruption from the master database file & simply restore the files back to the SQL Server. The tool allows you to recover SQL Server specific database objects like stored procedure, functions, tables, vows and more. Moreover, the utility is capable enough to recover lost or deleted SQL databases from MDF & NDF files without any error. 

Step by step procedure to fix Error 15105 SQL Server 2008 r2 with this utility : 

Step 1. Download and run the tool on  your Windows machine and click on the “open” to add the master database file ( MDF). 

Step 2. Thereafter, choose the scan mode as per your need and select the SQL Server version. Ensure that the recovered deleted object dialogue box is enabled. 

Step 3. Preview all the database objects and click on the “export” option. 

Step 4.  Here, Select “export to/ as” option and fill the required details. Then, click on save/export button to get rid of the SQL Error 15105 error. 

Concluding Words 

Resolving the SQL Server error 15105 can be achieved through the mentioned above. However, the crucial decision lies in choosing the right approach. The manual method as we have seen is complex and lengthy for fixing the “Error 15105 SQL Server 2008 backup” issue. On the other hand, the Automad tool is a perfect choice. Notably, it comes highly recommended by renowned IT experts. The professional solution stand out as the best answer for executing the SQL Server restore with error 15105 issue.